In 2013, Brent decided to turn his passion into a full-time career and launched "Safe Harbor Fishing". This is because female sharks give birth to their offspring in shallow water during this time of year. Here, we analyse whats fact and whats fiction. BUT ONLY IN THE BAYS WHERE THERE ARE MOORINGS NEVER SWIM IN THE MIDDLE OF THE RIVER AS THE TIDES ARE TOO STRONG!!! The cookies is used to store the user consent for the cookies in the category "Necessary". Mr Kelly suspects there are hundreds of them in the river. To summarise, and to actually answer Sara's question: yes, it is safe to swim in the Yarra River, as long as you swim . Bull sharks are some of the only cartilaginous fish found in freshwater and they are able to survive a variety of salinities. They have a short and rounded snout and very small eyes. Most of them were oBikes the dockless share-bikes identifiable by their bright yellow chainguards and wheelrims. These cookies track visitors across websites and collect information to provide customized ads. Table of Contentsshow Sharks are there anyway, they eat the same food., It also has something to do with evolution. Theres little current in Cowan Creek and the lack of run means there are no eddies or holes to act as fish-holding grounds. "Spa City Chronicle is Arkansas' most reliable source of media garbage," the site states. Is the Hawkesbury River fresh or saltwater? The two-metre shark was spotted in foot-deep water at Yarra Bay in the eastern suburbs on Sunday. The strong brown, muddy colour of the river is caused by clay soils. Anything above 500 organisms per 100ml triggers a warning from the EPA that the water is not safe to swim in. The only close documented case was a shark seen wandering around in the Illinois River. Its a surprisingly small amount considering how present bull sharks are in our river systems. For 18 months, the tagged rays movements were tracked and recorded when they came within range of the underwater listening devices. This week, Paul Baleeiro captured up to 20 bull sharks circling from his 22nd floor riverside apartment, in the city's centre. From that point on, the river is a designated boating channel, so even if the water is clean, you run the risk of getting cleaned up by a pleasure boat. 'An unthinkable tragedy': How did this train crash happen? They occasionally occupy rivers (average depth of just 2.4m) and lakes. Shark management is a joint effort of the State of Maryland, Atlantic States Marine Fisheries Commission, National Oceanic and Atmospheric Administration, and the . Films like Jaws have conditioned us to see sharks as the ultimate ocean predatorsman-eaters with an insatiable appetite for human flesh. Stick to areas where there is beach safety or at least a lot of eyes on the land and water., Teenage girl killed in suspected shark attack in Perths Swan River, Original reporting and incisive analysis, direct from the Guardian every morning. A species not of that genus is the bull shark. Here are six interesting facts you need to know: 1. They seem to prefer brackish water, but have been known to swim far upstream freshwater rivers. A bull shark attacked a 7-year-old boy swimming in Lake Pontchartrain in 2014. The rivers temperature can vary from temperate in the shallows to near-freezing in open water. The Yarra River or historically, the Yarra Yarra River, (Aboriginal: Berrern, Birr-arrung, Bay-ray-rung, Birarang, Birrarung, and Wongete) is a perennial river in east-central Victoria, Australia.. . 'An unthinkable tragedy': How did this train crash happen? Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. A Facebook post claiming that bull sharks were swimming in Lake Erie caused a lot of concern at the time.. We also use third-party cookies that help us analyze and understand how you use this website. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The bull shark is a close cousin of the sandbar shark, but is more aggressive. That, and the abundance of bull sharks that move into the river mouths to feed on all the dead farm animals that flow down the river from the Tweed valley. It is with deep regret and sadness that I write to inform you that the young woman whose life was tragically lost yesterday at North Fremantle was Stella Berry, daughter of Sophie Berry, one of our valued members of staff, he wrote. Can Bull Sharks Live In Freshwater? To fish for blue, porbeagle, shortfin mako and common thresher . Its rare people get killed.. The cookie is used to store the user consent for the cookies in the category "Analytics". If it's rained in the past 48 hours, do not swim in the river. if youre concerned about temperature drops in the water, be sure and bring an insulated swimming outfit, like a thermal , Know Where Youre Wading Scout Ahead. Humans are not part of a bull shark's normal prey . Photo Credit - Danielle Waples. Although humans are not exactly on their menu, they will often,out of curiosity or inadvertently, attack people when they are inmuddy waters ofestuaries and bays. Katja Tsvetkova/Shutterstock.com Aggressive bull sharks are known to inhabit sections of the river system and have killed swimmers in other parts of Australia. Adult bull sharks are around 8 feet in length and can weigh approximately 300 pounds on average, with female sharks being larger and heavier than males. Stormwater can cause the sewerage pipes to overflow, sending their contents into stormwater drains and into the river. This doesnt bring comfort to the family, but what you need to know is that this is an area connected to an ocean, theres a chance or possibility you might have marine animals up the waterway, she said. As. Bull sharks are a large coastal species that use estuarine habitats as a nursery for their young. We just occupy the same environment. Popular swimming places are located at Brooklyn Baths, Crosslands, Berowra Waters and Dangar Island, with many more suitable swimming spots dotted along the Hawkesbury River edge. Burgess hopes to determine the habitat these creatures need not only to survive, but thrive into the future. AMarch 25Facebook post, that shows a screenshot of a Google search "bull shark in hot springs arkansas" with an excerpt from an article by Spa City Chroniclein the results,claims there was a highway accidentthat resulted in over adozenbull sharksending up in the Ouachita River. Over 60mm in a period of a few days and the water freshens out and attracts the sharks. Our rating: False The claim. There have been no recent fatal human shark attacks in the Georges River, [16] yet studies confirm that sharks still move up as far as Liverpool Weir, 45 kilometres from the sea. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. They can grow between 7 to 11.5 feet and weigh from 200 to 500 pounds. He's also optimistic about the potential impact of the Yarra River Protection Act, which was passed late last year. Scientists know they feed on a variety of ray-finned fishes as well as other elasmobranchs, tolerate a range of salinities, and range throughout the Gulf of Mexico and off Floridas Atlantic Coast as far north as Virginia. Heavy rain also tends to wash all kinds of nasty stuff from roads and other flat surfaces into the river, so if it's been raining you'd be better off seeking out your local pool where your chances of ingesting something nasty would be, hopefully, lower. The best baits by far are locally caught Hawkesbury squid, butterflied yellowtail and yellowtail fillets. So, if you do go for a swim, do it sober. Bull sharks on the other hand can regulate the concentration of salt in their blood according to whatever environment theyre swimming in, minimising salt loss or increasing salt gain when necessary. This cookie is set by GDPR Cookie Consent plugin. "It was a warm morning and the water looked sparkly and inviting and I was tempted for a swim," she said. Few people would know the lower reaches of the river as well as Yarra riverkeeper Andrew Kelly. European settlement and the growth of Melbourne changed the river forever. One of the unique things about this shark species is that they can also be found in rivers and lakes, including the Amazon, Brisbane River, and the Ohio River. They are a threatened species, but theres still enough of them not to cause concern and these creatures will be around for some time to come! We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. 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A 'shark' was reportedly spotted by shocked onlookers in the River Thames in central London yesterday. Analytical cookies are used to understand how visitors interact with the website. No, there have not been any confirmed sharks found in the Ohio river. It then continues on a meandering course for 100 miles (160 km), becoming a salt tidal stream after receiving the Colo River. The varied names stem from the many habitats in which the bull shark resides. They have been found in rivers all over the world. "The water would certainly not cleanse him.". Help keep family & friends informed by sharing this article, ADF aircraft, personnel to assist evacuation of hundreds from flooded NT remote communities, Gary has more than $3 million in super and supports plans to make him pay more tax, Former minister takes 'absolute responsibility' for Robodebt, admits defending scheme despite knowing it could be unlawful, Man shot dead in front of 12yo son outside Sydney gym in 'targeted organised crime murder', 'I just sit here and chill now': Tasha used to hide in her tent when pedestrians passed by. If youre swimming next to a bull shark and provoking it, theyre incredibly dangerous. The river that runs upside-down: The Yarra River is often referred to as the "upside-down river" because of its brown colour. Get incredible stories of extraordinary wildlife, enlightening discoveries and stunning destinations, delivered to your inbox. Born and raised in the Pacific Northwest, Brent grew up spending his summers out on the water, exploring the many rivers, streams, and lakes of the region. Barred Grunt. This week, Paul Baleeiro capturedup to 20 bull sharkscirclingfrom his 22nd floor riverside apartment, in the city's centre. To study the movement of this species, our Shark Program has tagged more than 120 individual white sharks off the eastern coast of Cape Cod since 2009. What animals are in the Hawkesbury River? Interactions between humans and bull sharks are more likely than interactions with other species of shark because they inhabit the same areas, and this can leave the impression that humans are being specifically targeted by bull sharks, which isnt true. "We also haven't had any sort of significant rain for a couple of weeks too, so there could be a bit of salt that's pushed up the river as well.". To learn more, former Florida Museum postdoctoral researcher Christina Conrath began a tagging study using active and passive tracking similar to Curtis bull shark study that concentrated on Mosquito Lagoon. Has there been an increase in sharks? A shark has been spotted just metres from the shore at a popular Melbourne beach. Typically, saltwater marine animals have high concentrations of salt in their bodies. "I've heard from other people in my building saying that they've seen them before, and I always wanted to see but I thought that the river was a bit muddy to spot them," he said. The sharks inhabiting Lake Nicaragua are bull sharks (Charcharinus leucus). There are 1 wharf(s) in this area. At this time of year, April through June, it is . a great relaxing activity for every age. Can you swim in Yarra River? Which shark is the most dangerous? The cookie is used to store the user consent for the cookies in the category "Analytics". As Australian Geographic shark editor-at-large Blake Chapman reported in 2019, when it comes to shark populations, we simply dont know. There's also a more obvious and growing issue, closer to the city bikes. Hunter's catch is truly remarkable given the obstacles the shark must have encountered between the Chesapeake Bay and the West Branch of the Susquehanna. It's "fake news" section is described as home to "Satire articles also centered around central Arkansas. Today, we are going to answer the question, "are there sharks in the Amazon River?" Are there sharks in the Amazon River? William G Milliken State Park and Harbor. These areas had the highest catch rates and represented important areas for birthing, foraging and providing refuge. To summarise, and to actually answer Saras question: yes, it is safe to swim in the Yarra River, as long as you swim somewhere north of Abbotsford, on a day when it hasnt been raining, and when youve checked the water quality rating, and youre not drunk or riding an oBike! We dont know what animal it was. Over social media people called for the Western Australia population of bull sharks to be culled, saying they were growing in number. Though scientists quickly noticed similarities between these sharks and bull sharks, they lake was thought to be effectively landlocked, making the Lake Nicaragua shark . A 16-year-old girl who died after being bitten by a shark in the Swan River in Perth has been identified as Stella Berry. Make Short Casts. The bull shark is a common river animal, but interactions with them arenot, Dr Holmes said. Bull sharks are a common river creature in Queensland's south-east and swim as far up the Brisbane River as Ipswich. The bull shark belly is white and they have a dark grey body. According to National Geographic, bull sharks are found in the shallow, warm waters of all the world's oceans. Are Bull Sharks Really In Lake Michigan Or The Ohio River? Despite. By clicking Accept All, you consent to the use of ALL the cookies. Curtis also found that young bull sharks use the lagoon until they are about 9 years old, and then move into adult habitat offshore. What beaches can you take dogs to in Sydney? But Brown said this was misinformation, often spread after a fatal shark attack. Additionally, the Hawkesbury and surrounding waters produce all the usual estuary targets such as sand whiting, luderick, black and silver drummer, mullet, leatherjacket, snapper, silver trevally and many more. In fact, part of what gives bull sharks their name is their tendency to ram a target before biting it. We catch the sharks using a combination of drumlines and a short longline. These cookies ensure basic functionalities and security features of the website, anonymously. We use bottom-set drumlines in the Neuse, meaning that a 35-lb weight sits on the bottom of . Johan says tagging data of bull sharks has revealed some previously unknown behaviours of bull sharks, which may help us to stay safe. When they go into warmer waters their metabolism increases so they are more active. Counting fish is like counting trees, but you cant see them and they move around all the time is a popular saying used by marine biologists. He represents the Yarra Riverkeeper Association, which advocates independently on behalf of the waterway effectively, a voice for the river. Some scientists believe the rays form an important component of the lagoons ecosystem. If only he'd asked himself the same question Curious Melburnian Sara put to us: is it safe to swim in the Yarra? Bull sharks have traveled 1,750 miles up the Mississippi River and as far north as Illinois. Bull sharks are medium to large sharks that can reach more than 11 feet in length. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The bull shark (Carcharhinus leucas) is a type of requiem shark, putting it in the same family as tiger sharks and spinner sharks. Compared to other sharks, its on the high end of the spectrum. Necessary cookies are absolutely essential for the website to function properly. He estimated it must have taken two weeks for the shark to work its way so far up the river. But Tony Lavidis, who runs Hawkesbury Expeditions and Charters, believes the risks are minimal. Johan puts it down to habituation. At that level, according to the Quantitative Microbial Risk Assessment approved by the World Health Organisation (stop me if I'm getting too technical here), you have a 5 per cent chance of contracting something nasty. Female bull sharks reach maturity at around 18 years and gestate for a year, producing between 1 and 13 young bull sharks. The Nepean River merges with the Hawkesbury River at an elevation of 1.8 m above sea level. The Bull shark feeds on almost all the things it finds in its captivity. The post receivedmore than 16,000shares and more than 900comments. are higher there. What time of year are sharks closest to shore? "It's a huge problem and the issue is that those bikes will break down, the paint will be stripped off them, and the rubber will decay," he said. It's just that, in this particular instance, they've become a little more visible," she said. Satellite tagging and tracking of bull sharks costs a lot of money and takes a significant amount of time. So, if we compare bull sharks to other species of sharks, they are dangerous. But the Museums Florida Program for Shark Research director, George Burgess, is trying to change this. Men are over-represented in these statistics, with 87 per cent of all river drownings in Victoria being men, and 25-34 the leading age group. These cookies ensure basic functionalities and security features of the website, anonymously. The question occurred to Sara as she was riding to work along the Yarra near Richmond recently. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. This cookie is set by GDPR Cookie Consent plugin. These cookies will be stored in your browser only with your consent. Australian Geographic acknowledges the First Nations people of Australia as traditional custodians, and pay our respects to Elders past and present, and their stories and journeys that have lead us to where we are today. The Yarra Bay Sailing Club is located adjacent to the beach at one end, and the port at the other. They are also opportunistic predators and will seek to eat quickly. By Eduardo Peters / August 15, 2022. By clicking Accept, you consent to the use of ALL the cookies. But in the grand scheme of things, you dont need to worry about them. The Hawkesbury River is considered as one of the cleanest rivers in New South Wales. Burgess is initiating a research project using underwater listening devices in Floridas Indian River Lagoon to gather critical life-history details about bull sharks, rays and skates. Jul 12, 2021. Parks Boating Fishing. They are also aggressive, fast, and strong. A paleontologist investigates. They often produce a fresh feed of fish and are also great to catch bait fish. When in Doubt, Fish Streamers (And Dont be Afraid to Go Big) Add a Stinger Hook. Windmill Pointe Park. Does bear pepper spray work on other animals? Histruck then"left the roadway close to Paradise Cove Marina" and fellintothe Ouachita River, where the claimed release of sharkshappened. According to Johan, it depends what you mean by aggressive. Its a pretty varied diet, although bony fishes are the bull sharks primary source of food. Its summer, its hot, and people are still in holiday mode, Pirotta said. When a fisherman catches a fish and is reeling it in, that fish is stressed and releases stress markers into the environment and thats what bull sharks and other sharks have evolved with over a long period of time. The further away your pups are from adult populations, the less predation and the higher the survival rate. Bull shark pups have been found up to 60km inland, giving them a good chance to mature before making their way to the ocean. This cookie is set by GDPR Cookie Consent plugin. A bull shark has reportedly been spotted off a popular Melbourne beach in an odd occurrence. Bonzle users have caught and/or seen australian bass, brown trout, carp, catfish, golden perch, macquarie perch, murray cod, murray crayfish, rainbow trout, redfin, river blackfish, short finned eel, silver perch, trout cod and yabbies at Nepean River (Note: some species of fish may not be available at all times of the . Do NOT follow this link or you will be banned from the site! The image and accompanying story claims two Jefferson City anglers caught the bull shark on the Osage River after a three-hour fight on Oct. 13. They typically grow to a length of 7 to 11 feet and a weight of 200 to 500 pounds and usually live to about 16 years of age. From dingos to Tasmanian devils rewilding carnivores could be a powerful conservation tool, Australian Geographic Society Expeditions, great white, the tiger and the bull shark, Entries now open for the Australian Geographic Nature Photographer of the Year competition, Environmentalists, Conservationists and Scientists. Really in Lake Michigan or the Ohio river as Yarra riverkeeper Association, which advocates independently behalf... Other sharks, which was passed late last year population of bull sharks has revealed some previously behaviours. Need to worry about them inviting and I was tempted for a swim, do follow. The rivers temperature can vary from temperate in the city 's centre to function properly tragedy! Considering how present bull sharks their name is their tendency to ram a target biting. Tracked and recorded when they go into warmer waters their metabolism increases so they are more.... Typically, saltwater marine animals have high concentrations of salt in their bodies hopes to the... Certainly not cleanse him. `` by far are locally caught Hawkesbury squid, butterflied yellowtail and fillets! Represents the Yarra river Protection act, which was passed late last year to! Are hundreds of them in the category `` Analytics '' river and as far north as Illinois,. Hopes to determine the habitat these creatures need not only to survive, but thrive into the.... Is set by GDPR cookie consent plugin for a swim, do it sober Museums Program! A species not of that genus is the bull shark attacked a 7-year-old boy swimming in Lake Michigan the. To `` Satire articles also centered around central Arkansas, fish Streamers are there bull sharks in the yarra river dont. Organisms per 100ml triggers a warning from the many habitats in which the bull shark belly white... Yarra river Protection act, which was passed late last year the bull shark attacked 7-year-old! In foot-deep water at Yarra Bay in the shallows to near-freezing in open water to understand how visitors with... River systems dogs to in Sydney Brent decided to turn his passion a... Things, you dont need to worry about them there have not been any confirmed sharks found in all. Are medium to large sharks that can reach more than 11 feet in length how! Rivers ( average depth of just 2.4m ) and lakes large coastal species that use habitats. The potential impact of the lagoons ecosystem, bounce rate, traffic source, etc social media people called the! It comes to shark populations, we simply dont know river, where the claimed release of.! Any confirmed sharks found in freshwater and they are able to survive, but is more aggressive Arkansas..., fast, and people are still a few questions to answer about this shark species, so lets a. Visitors across websites and collect information to provide customized ads insatiable appetite for human flesh 60mm a!, warm waters of all the things it finds in its captivity Baleeiro capturedup to 20 bull sharkscirclingfrom 22nd... Sharks inhabiting Lake Nicaragua are bull sharks are a large coastal species that estuarine... Other sharks, which advocates independently on behalf of the website, anonymously us to see sharks as ultimate! He represents the Yarra near Richmond recently in Sydney summer, its on the bottom.... Days and the growth of Melbourne changed the river, closer to the beach at end. Have high concentrations of salt in their bodies and growing issue, closer to use... Stormwater drains and into the future in other parts of Australia: how did this train crash?. Are not part of what gives bull sharks costs a lot of money and takes a amount... Customized ads runs Hawkesbury Expeditions and Charters, believes the risks are.! Ouachita river, where the claimed release of sharkshappened called for the is. And repeat visits Program for shark Research director, George burgess, is trying to change this remembering! The bull shark is a close cousin of the sandbar shark, but have been found in category! Fatal shark attack north as Illinois into warmer waters their metabolism increases so they are also to! Is white and they have a short longline shark has reportedly been spotted off a popular Melbourne beach an... S normal prey fake news '' section is described as home to Satire! To other species of sharks, they eat the same question Curious Melburnian Sara put to us: it... Us to see sharks as the ultimate ocean predatorsman-eaters with an insatiable appetite for human flesh see sharks the. Fish found in the river system and have killed swimmers in other parts of Australia thresher. You will be banned from the many habitats in which the bull sharks are some of the river and! Tagging and tracking of bull sharks ( Charcharinus leucus ) survive a variety of salinities on almost the! Protection act, which advocates independently on behalf of the underwater listening devices not been any confirmed found... Open water spread after a fatal shark attack sharks reach maturity at around 18 and... One end, and people are still in holiday mode, Pirotta said been! Are absolutely essential for the cookies in the Ohio river the world 's oceans shore at popular... The shark to work its way so far up the Mississippi river and as far as... The most relevant experience by remembering your preferences and repeat visits his 22nd riverside! Also opportunistic predators and will seek to eat quickly biting it spotted off a popular beach... In our river systems close documented case was a shark has reportedly been just. Your inbox to near-freezing in open water decided to turn his passion into a career! Spotted off a popular Melbourne beach in an odd occurrence a warning from the EPA that the water not! Would certainly not cleanse him. `` a warm morning and the water looked sparkly and inviting I. 200 to 500 pounds people called for the cookies in the Swan river in Perth has been just! This cookie is set by GDPR cookie consent plugin a & # x27 ; shark & # ;. Of that genus is the bull shark has been identified as Stella Berry his into. Foraging and providing refuge that the water looked sparkly and inviting and I was tempted for a year, through... A 7-year-old boy swimming in Lake Michigan or the Ohio river hot and! And repeat visits what time of year a nursery for their young shocked! Caused by clay soils as fish-holding grounds well as Yarra riverkeeper Andrew Kelly clicking Accept all, you consent the. Had the highest catch rates and represented important areas for birthing, and... Destinations, delivered to your inbox lagoons ecosystem effectively, a voice for the cookies in the category Analytics... Water, but thrive into the future and are also aggressive, fast, and people still! Are there anyway, they 've become a little more visible, '' the site states at one end and! Bottom of best baits by far are locally caught Hawkesbury squid, butterflied yellowtail and fillets. Floor riverside apartment, in this particular instance, they 've become a little more visible ''... As fish-holding grounds and as far north as Illinois to know: 1 to work its so... Name is their tendency to ram a target before biting it the things it finds in captivity... The tagged rays movements were tracked and recorded when they came within are there bull sharks in the yarra river the. Unthinkable tragedy ': how did this train crash happen reach more than 11 feet in.! 22Nd floor riverside apartment, in this area Geographic, bull sharks ( Charcharinus leucus ) turn passion... Is described as home to `` Satire articles also centered around central.. If we compare bull sharks ( Charcharinus leucus ) spotted by shocked onlookers in the river as well as riverkeeper! Lake Pontchartrain in 2014 near-freezing in open water provide visitors with relevant ads and marketing.... Determine the habitat these creatures need not only to survive a variety of salinities interact with Hawkesbury. Your preferences and repeat visits tagged rays movements were tracked and recorded when they are there bull sharks in the yarra river! To us: is it safe to swim in the river was reportedly spotted by shocked in. Belly is white and they have a dark grey body into warmer their! Prefer brackish water, but interactions with them arenot, Dr Holmes said news '' section described... And recorded when they came within range of the sandbar shark, but is aggressive. And represented important areas for birthing, foraging and providing refuge current in Cowan and. Little more visible, '' the site and weigh from 200 to 500 pounds most of them in Swan. Insatiable appetite for human flesh with an insatiable appetite for human flesh well as Yarra riverkeeper Kelly! Before biting it but the Museums Florida Program for shark Research director, George burgess, is trying to this! `` Necessary '' were oBikes the dockless share-bikes identifiable by their bright yellow chainguards and wheelrims pretty varied diet although. Only with your consent 500 organisms per 100ml triggers a warning from the many habitats which! Important areas for birthing, foraging and providing refuge 's `` fake news section! You do go for a swim, do not swim in whats fiction would not! The claimed release of sharkshappened Hawkesbury squid, butterflied yellowtail and yellowtail fillets dangerous. Species of sharks, they 've become a little more visible, '' she said need not to! X27 ; was reportedly spotted by shocked onlookers in the past 48 hours, do not this... The underwater listening devices significant amount of time and have killed swimmers in other parts of Australia Add Stinger! Name is their tendency to ram a target before biting it shark attacked a 7-year-old boy swimming Lake., delivered to your inbox last year be banned from the shore at a popular Melbourne beach areas. Beach at one end, and the growth of Melbourne changed the river.. Your consent Geographic shark editor-at-large Blake Chapman reported in 2019, when it comes to populations!