279-289. “This difference is similar to the genetic distance between both Atlantic and Indo-Pacific bigeye sixgill sharks and the bluntnose sixgill shark (7.965% and 8.200%, respectively), and between the entire genus Hexanchus and its sister genus Heptranchias (8.308%),” Daly-Engel maintains. Comparison with sawfish. SIZE Maximum total length is 15.8 ft [4.82 m]. They are likely primarily carrion feeders, but may also take live prey when the opportunity arises. This beast puts “Jaws” to shame. This size comparison chart shows how much bigger the mega-shark would have been compared to modern Great White sharks and humans. The eyes are a fluorescent green while the shark is alive. They’re found in tropical and temperate waters worldwide. Sorry, your blog cannot share posts by email. ColouringThey range in colour from a light grey or brown to almost black on top and may have darker patches of colour on their sides. English language common names include bluntnose sixgill shark, Atlantic mud shark, brown shark, bull dog shark, bull shark, cow shark, gray shark, grey shark, mud shark, sixgill cow shark, sixgill shark, and sixgilled shark. Though they’re not the largest shark species — that title goes to their extinct cousin, the Megalodon — they predate most dinosaurs, according to the researchers who captured the video from OceanX. A rare, six-gill shark filmed off the coast of northeast coast of Molokai fall under the penetrating probe of two lasers as it swims at a depth of 1000m. 4, pp. Six gill slits are very long. Your Ad Choices Its serrated teeth may be a link to extinct ancestors. Females mature at 14.7 to … It is found in tropical and temperate waters worldwide and its diet is widely varied by region. If you're incredibly lucky 1 in 11.5 million are the odds of a shark attack, and 1 in 264.1 million to die by a shark. Only one mature sixgill shark, a 421 cm TL female with term embryos, was examined. Males mature at 4.0-5.2 feet (1.2-1.6 m) in length and females at 4.7-5.8 feet (142-178 cm). 7:15: Gaze into the cryptic green eye of a sixgill shark. Since sixgill sharks do not appear to be abundant We came very close numerous times but never quite had the right shot, or in one case, the shark knocked the spear off the gun and dislodged the tag! "If our theory is correct, we expect to see the same vertical migration behavior as the other sharks demonstrated but without the initial two days of erratic behavior," Grubbs said. Since this time we have tagged more than 20 bluntnose sixgill sharks with archiving satellite tags and another 50 with simple identification tags. Maturity status was inferred based on published estimates of size-at-maturity for sixgill sharks (females, 420 cm; males, 309 cm, Ebert, 1986, Ebert, 2002). Size at maturity was es-timated for females by comparing gonad development with length-weight mea-surements. A "monster" shark, believed to be the biggest sixgill ever caught on a fishing rod in Europe, has been hooked off the Irish coast at County Clare. "Unfortunately, we have to wait impatiently to hear from that tag!". The underside is paler. A sixgill shark. Finding a marine biologist willing to go down in a submarine to try to tag a six-gill at depth was the easiest part! The shark has a short blunt snout and its single dorsal fin is set far back near the caudal fin. "They seem reasonably common. Sixgill Shark Diet: The Sixgill Shark is preferred to consume a wide range of marine organisms including dead pig and horse carcasses from the submarine. And then the Uvic team came in ! Females tend to be slightly larger than males, averaging around 4.3 m in length while males tend to stay near 3.4 m. Mature males average between 310 and 330cm and the female is larger at between 350 and 420cm. Tagging them could enable scientists to learn more about their biology and behavior, and protect them from threats. The bigeyed sixgill shark (Hexanchus nakamurai) is a cow shark of the family Hexanchidae.Its dorsal surface has a brownish-gray color, and is sharply separated from the light coloring of its ventral surface. Sevengill sharks, … The Bluntnose Sixgill Shark, Hexanchus griseus, is one of the largest predatory shark species and has a worldwide geographic distribution including all tropical and temperate oceans (Castro, 2011). They are live bearing. Its fins have thin white trailing edges. August 2, 2019 | 4:05pm | Updated August 2, 2019 | 4:39pm. "So how do we test the theory that this initial difference in behavior represents recovery from capture?" The shark's eye was captured peering into the submarine. Underwater video of a sixgill shark, filmed by the California Department of Fish and Game's remotely operated vehicle (ROV) unit off San Miguel Island, CA. The team, led by … These sharks are characterized by a broad, pointed head, six pairs of gill slits, comb-like, yellow lower teeth, and a long tail. They are highly distinctive due to the fact that they have six large conspicuous gill slits, hence the name. Sixgill sawsharks feed on shrimp, squid and bony fish. (Credit: OceanX, Florida State University) Bluntnose sixgill sharks are thought to have lifespans approaching 80 … It is also known by many other names, such as cow shark and mud shark. "We interpreted that erratic phase as a possible recovery period due to short term physiological stress associated with being captured and brought to the surface.". Bluntnose sixgills are distributed across tropical and temperate waters around the world usually living at depths of between 650 and 3,300 feet, although they have been spotted up to 5,000 feet below the surface. Sixgill shark. Sixgill Shark Size: These sharks can grow typically to 8 m which are about 26 feet. 19, No. Advertisement. A "monster" shark, believed to be the biggest sixgill ever caught on a fishing rod in Europe, has been hooked off the Irish coast at County Clare. This is a beautifully consistent vertical pattern the sharks undergo every day. Furthermore, the data showed, intriguingly, that these sharks vertically migrate every day and night. During one of the dives, the team were fortunate to come up close and personal with a huge female bluntnose—=one of the largest sharks in the world—which one of the researchers in the video can be heard describing as "definitely bigger than the sub is long.". Its fins have thin white trailing edges. Hexanchiform sharks have a single dorsal fin, either six or seven gill slits (versus the 5 found in all other existing sharks), and no nictitating membranes (protective third eyelids). See why nearly a quarter of a million subscribers begin their day with the Starting 5. Do Not Sell My Personal Information, Your California Privacy Rights The average size of this species is 5.6 feet (1.7 m) with weights around 44 pounds (20 kg). Neil tests his veterinary skills and diving abilities to the max on a rescue mission to save the life of a prehistoric shark. Loved it !! "We go directly to the sharks in their natural habitat and tag them at depth. The maximum length is around 550cm. The bigeye sixgill shark may grow to a maximum of 5.6 feet in length. Due to Covid-19, we are operating with a skeleton crew at our fulfillment center. This drove our efforts to attempt to tag these sharks at depth. Due to its solitary life in deep water, scientists don’t know much about it, but they think that they can live over eighty years. Nationalism and Populism Are the GOP's Future, Surfer Bitten by Shark Goes to Bar, Not Hospital, to Brag About Ordeal, Elusive Shark Lost for 40 Years Rediscovered by Forrest Galante, Great White Sharks Filmed Gathering in California's Monterey Bay. Though they didn’t nab the one in the video, they were able to successfully tag another shark. The calculated growth curves (Fig. Historical Biology: Vol. The shark, also known as Carcharocles angustidens, roamed* Victoria’s ancient sea 25 million years ago and ate small whales. "We began this project in 2005 to begin investigating whether deep sea sharks caught and brought to the surface survive if released. The maximum size of the bigeye sixgill shark is 5.9 feet (1.8 m) total length. "Yet we know virtually nothing about their biology and ecology. Through their base pairs of mitochondrial genes COI and ND2, these 2 species … Hexanchiform sharks have a single dorsal fin, either six or seven gill slits (versus the 5 found in all other existing sharks), and no nictitating membranes (protective third eyelids). Bigeyed sixgill sharks, Hexanchus nakamurai (Teng, 1962), aka bigeye sixgill sharks, six-gill sharks, are members of the most ancient frill and cow sharks order, Hexanchiformes. Rarely Seen Sharks :: MarineBio Video Library Sixgill or bluntnose sixgill sharks, Hexanchus griseus (Bonnaterre, 1788), have a number of common names. Loved it !! Bigeyed sixgill sharks, Hexanchus nakamurai, 2. Since I was early I became an impromptu beach shark educator. Females tend to be slightly larger than males, averaging around 4.3 m in length while males tend to stay near 3.4 m. 2) are theoretical and coarse, but they produce values which correspond closely with the one available growth rate (∼12 cm/year) from a recaptured 248-cm female sixgill shark , and allow us to roughly estimate the size of fish leaving the Sound. But finally on the last dive on this last expedition [in Exuma Sound,] my colleague Gavin Naylor successfully tagged a sixgill from the sub!". A team of researchers has captured incredible footage of a close encounter with an ancient species of shark known as the bluntnose sixgill. The Bluntnose Sixgill Shark, Hexanchus griseus, is a large predatory shark, has a worldwide distribution and is listed as near-threatened by the International Union of Conservation of Nature (IUCN). Gut analysis revealed that the sixgill shark's diet consists mainly of bony and cartilaginous fishes. The shark was about 20 feet long — nearly twice the size of the submersible, according to the OceanX research crew. Males mature at 4.0-5.2 feet (1.2-1.6 m) in length and females at 4.7-5.8 feet (142-178 cm). This primitive species is one of the few surviving members of the Hexanchidae family. The person who submits the winning name gets a prize: a sweet submarine dive. Other aquatic organisms like rays, bony fish, chimeras, crabs, shrimp, and even seals. A stout shark with six gill slits. The bigeye sixgill shark may grow to a maximum of 5.6 feet in length. Thanks for contacting us. beach Back to video It was pregnant and King says it was carrying several young, called pups, when it died, likely of natural causes. The sharks often grow to 16 feet in length, but can become even larger. In the video, which was filmed on a expedition off the coast of the Bahamas, the female shark can be seen emerging from the depths of the ocean — and charging toward the submarine, gnashing her pearly whites and giving them a wild-eyed look through the window. SIZE Maximum total length is 15.8 ft [4.82 m]. With Kieran C, Josh McInnes. Grubbs said. Because they tend to live deep in the ocean and stay away from light, little is known about them. Body length: 15-20 ft. Tooth height: 2.13 in. This stress could be enough to temporarily alter this behavior, even though the sharks seemed to tolerate being brought to the surface. Females tend to be slightly larger than males, averaging around 4.3 m in length while males tend to stay near 3.4 m. We've received your submission. The bluntnose sixgill is a specific species of sixgill sharks, of genus Hexanchus, a genus that also consists of another species: the bigeye sixgill shark (Hexanchus nakamurai). The sixgill shark, or Hexanchus griseus, is a common species of deep water shark. The sixgill sharks are a genus, Hexanchus, of deepwater sharks in the family Hexanchidae. This size comparison chart shows how much bigger the mega-shark would have been compared to modern Great White sharks and humans. The body of this shark is small, slim, and fusiform in shape. Eduardo Rodriguez has a 13-4 record for the Red Sox,... Post was not sent - check your email addresses! Retail Price: Was: Sale: $21.99 - $29.99. Increase of body size in sixgill sharks with change in diet as a possible background of their evolution. However, researchers know very little about this mysterious species. 19, No. Sevengill sharks, … Sitemap The shark has a short blunt snout and its single dorsal fin is set far back near the caudal fin. However, the bluntnose sixgill shark is still a very strong swimmer. Atlantic sixgill shark Short Description Original diagnosis of SPRINGER & WALLER, 1969 [2272] : Hexanchus vitulus is a small species that becomes sexually mature at a length of 140 to 175 em and probably reaches lengths not much greater than 180 cm. Along with their color something that sets them apart from the other types of sawfish is their size: the females are around 136 cm where the male are around 112 cm. Bigeyed sixgill sharks, Hexanchus nakamurai (Teng, 1962), aka bigeye sixgill sharks, six-gill sharks, are members of the most ancient frill and cow sharks order, Hexanchiformes. The body of this shark is small, slim, and fusiform in shape. It is also one of the largest sharks that feed on prey other than plankton. The bigeyed sixgill shark (Hexanchus nakamurai) is a cow shark of the family Hexanchidae.Its dorsal surface has a brownish-gray color, and is sharply separated from the light coloring of its ventral surface. Images captured by OceanX researchers show the massive jaws of the elusive bluntnose sixgill shark opening up before the submarine. Scientists think a Greenland shark caught in the North Atlantic Ocean in 2017 was about 512 years old. The shark, also known as Carcharocles angustidens, roamed* Victoria’s ancient sea 25 million years ago and ate small whales. A second, smaller sixgill shark was then seen foraging for food in the mud in front of the submersible. Russian police accuse 10 of mass unrest ahead of protest, This story has been shared 117,469 times. It’s also technically not the oldest shark alive. Scientists intrigued by remains of pregnant sixgill shark on B.C. However, the bluntnose sixgill shark is still a very strong swimmer. "Approximately half of all living species of sharks on the planet live their entire lives in the deep sea," Grubbs told Newsweek. sixgill shark The sixgill shark looks similar to the sevengill, but with six gills instead of seven (or five, like most sharks) and striking green eyes. Privacy Notice The average size of this species is 5.6 feet (1.7 m) with weights around 44 pounds (20 kg). "They have a single dorsal fin that is placed far back on the midline near the tail," Gavin Naylor, one of the scientists on the expedition from the Florida Program for Shark Research at the Florida Museum of Natural History, told Newsweek. So from Ghost gear into Sixgill shark necropsy in Cole bay. Terms of Use To continue reading login or create an account. The shark was found dead on the beach earlier this week.Some pathetic person cut the head off and st... ole the jaw Grrr. A sixgill research opportunity. English language common names include bluntnose sixgill shark, Atlantic mud shark, brown shark, bull dog shark, bull shark, cow shark, gray shark, grey shark, mud shark, sixgill cow shark, sixgill shark, and sixgilled shark. 117,469, This story has been shared 99,203 times. 4, pp. Sixgills are the world’s third-largest predatory shark, comparable in size to great white, and found in tropical and temperate waters worldwide. Sixgill Shark Size: These sharks can grow typically to 8 m which are about 26 feet. (MacQuity and King, 2000; Martin, 2000) There exist size differences between male and female sharks. In a lifetime, you are more likely to die from fireworks, lightning, drowning, a car accident, stroke, or heart disease. ... Radio trackers helped determine the sharks were clustering in territories the size of golf courses. Instagram star ‘Zombie Angelina Jolie’ gets 10 years in Iranian prison, Boy racks up $16K bill on mom's credit card playing video games, Teresa Giudice kisses boyfriend Luis 'Louie' Ruelas during NYC date night, 'Get off this plane': Family tossed off flight after toddler mask fiasco, President Trump makes Christmas Eve a federal holiday. (2007). " [Sixgills] are the biggest, dominant predator of these depths," Grubbs said. Other aquatic organisms like rays, bony fish, chimeras, crabs, shrimp, and even seals. The bluntnose (Hexanchus griseus) is part of an old lineage of sharks that can be traced back 180 million years in the fossil record. Both Blue Whales and Whale Sharks are the largest in their species and they are both great swimmers, ocean dwellers, fish and crustacean eaters, fear-evokers, and simply awe-inspiring. Blutnose sixgill shark eats the bait the team laid out. 99,203, This story has been shared 87,789 times. Increase of body size in sixgill sharks with change in diet as a possible background of their evolution. Sixgill sharks, Hexanchus griseus, 3. A third shark, thought to be about two metres, approached the brightly-lit … The bluntnose sixgill shark (Hexanchus griseus), often simply called the cow shark, is the largest hexanchoid shark, growing to 20 ft (6.1 m) in length. Before we share the results of the research, though, a bit of background on sixgill sharks: they’re the world’s third-largest predatory shark, comparable in size to great white sharks. This story has been shared 117,469 times. The underside is paler. If you're incredibly lucky 1 in 11.5 million are the odds of a shark attack, and 1 in 264.1 million to die by a shark. The largest species can grow up to 8 m long and weigh over 600 kg (1320 lb). A team of researchers has captured incredible footage of a close encounter with an ancient species of shark known as the bluntnose sixgill. This tagging revealed to the researchers that nearly all bluntnose six gills survive being caught and brought to the surface. Females are larger than males.". COLOR Brown to dark gray above; off-white below. "Finding a six-gill shark at depth turned out to be much less of a challenge than many had imagined," Gaylor said. Also in post-Shark Week news: The OceanX team is asking the public to help name its new ship, currently named Alucia2, which will be featured in a series on the NatGeo channel. This finding is what led to team to try and tag a bluntnose in the deep-sea instead. We're Loving These Simple Photos of Cats Wearing Shower Caps The sub crew were left in a state of awe by the encounter: "My goodness that is amazing," one of the team comments, while another can be heard saying, "This is a monster. Texas Casting Reel Project - HALF PAYMENT. Shop Our Rods SHOP NOW. The eyes are a fluorescent green while the shark is alive. They are pale brown in color, with a white underbelly. These sizes correspond to estimated ages of 11-14 years for males and 18-35 years for females. ColouringThey range in colour from a light grey or brown to almost black on top and may have darker patches of colour on their sides. With Kieran C, Josh McInnes. This legendary predator lives in coastal surface waters worldwide. In fact, it represents perhaps the oldest living lineage of sharks in the world, the researchers say. Atlantic sixgill shark Short Description Original diagnosis of SPRINGER & WALLER, 1969 [2272] : Hexanchus vitulus is a small species that becomes sexually mature at a length of 140 to 175 em and probably reaches lengths not much greater than 180 cm. Their anal fins are smaller than their dorsal fins. ... but the gill slits of the saw shark are positioned on the side like a shark. Individuals are thought to live up to 80 years. Male sixgill sharks become mature at about 3 m (10 ft) long, when they weigh about 200 kg (440 lbs). Contrast this with the volumes of scientific information on species like white sharks and tiger sharks. Whale Shark (Rhincodon typus) 55.7 feet / 17 m. The largest fish in the world, the whale shark, is an … (MacQuity and King, 2000; Martin, 2000) There exist size differences between male and female sharks. Rare six-gill shark. But all of these were tagged by bringing the sharks to the surface and tagging them alongside the boat or even bringing them onto the deck of ship.". Do Not Sell My Personal Information. There are currently four known species of cow shark: 1. 8:30: … Historical Biology: Vol. The sixgill sharks are a genus, Hexanchus, of deepwater sharks in the family Hexanchidae. Plus, with the largest shark species being called a whale shark, the confusion can be greater. 87,789, © 2020 NYP Holdings, Inc. All Rights Reserved This tag will remain on the shark for 3 months, before detaching, floating to the surface and uploading the data it has collected via satellite link to a processing center where it can be analyzed. This shark gets its name from the fact that is has six gill slits, unlike most other sharks which have only five. sixgill shark The sixgill shark looks similar to the sevengill, but with six gills instead of seven (or five, like most sharks) and striking green eyes. “This is a monster,” one of the scientists says in the video, as the shark inspects the tagging gun at the bottom of the sub. Share on Facebook Email This Video. However, the bluntnose sixgill shark is still a very strong swimmer. We made three expeditions and many dives spending many hours sitting on the bottom trying to get the sharks to come in and then trying to tag them. She is huge." Fluorescent green eyes. A third shark, thought to be about two metres, approached the brightly-lit … Pair of sixgill sharks spotted 1,000ft beneath the waves (Video) ... compared to the five seen on most shark species. 279-289. In a lifetime, you are more likely to die from fireworks, lightning, drowning, a car accident, stroke, or heart disease. ", "However, one of the things we noticed is that across all of these sharks there was an initial period of about two days after tagging where the sharks did not show this pattern and seemed to behave a bit more erratically, and then they settled into that distinct vertical migration every day after that," he said. Only one mature sixgill shark, a 421 cm TL female with term embryos, was examined. Retail Price: $289.99 Was: Sale: $65.00. There are currently four known species of cow shark: 1. ", "It is often assumed that these deep sea sharks would die if released," he said. The largest species can grow up to 8 m long and weigh over 600 kg (1320 lb). Mature males average between 310 and 330cm and the female is larger at between 350 and 420cm. (2007). SHOP OUR REELS SHOP NOW. Maturity status was inferred based on published estimates of size-at-maturity for sixgill sharks (females, 420 cm; males, 309 cm, Ebert, 1986, Ebert, 2002). Choose Options. Sawfish can have a much larger size, lack barbels, and have evenly sized teeth rather than alternating teeth of the saw shark. Sixgill sharks, Hexanchus griseus, 3. A team of researchers has captured incredible footage of a close encounter with an ancient species of shark known as the bluntnose sixgill. Females mature … Plus, with the largest shark species being called a whale shark, the confusion can be greater. A stout shark with six gill slits. 5:50: a massive sixgill shark, perhaps 16 feet long (5 meters), visits the OceanX submersible. "In Exuma Sound [the Bahamas,] this corresponds to coming up to 400-500 meters [1,312-1,640 feet] deep at night and remaining at 900-1200 meters [2,952-3,937 feet] during the day. Yet as commercial fisheries globally move deeper, deep sea sharks are being increasingly caught, particularly as bycatch. "They are reported to grow to over 5 meters [16 feet] long and weigh more than a ton. Since I was early I became an impromptu beach shark educator. There exist size differences between male and female sharks. Bluntnose sixgill biting off bait during an OceanX tagging mission. So from Ghost gear into Sixgill shark necropsy in Cole bay. Due to its solitary life in deep water, scientists don’t know much about it, but they think that they can live over eighty years. Fins have white edges. Not much is known about the elusive bluntnose sixgill sharks, since they live so deep in the ocean. A second, smaller sixgill shark was then seen foraging for food in the mud in front of the submersible. "At dusk they come up the slope sometimes in the water column to shallower depths where water temperature are about 62 degrees Fahrenheit, remaining there overnight, and then at dawn they return to deeper depths where temperatures are 41 degrees Fahrenheit," Grubbs said. Six-gilled shark definition is - a cowshark (genus Hexanchus) having six gill slits; especially : a common dusky Pacific shark (H. griseus). Your California Privacy Rights These sharks are characterized by a broad, pointed head, six pairs of gill slits, comb-like, yellow lower teeth, and a long tail. Sixgill Shark Diet: The Sixgill Shark is preferred to consume a wide range of marine organisms including dead pig and horse carcasses from the submarine. Most sharks only have five. A massive bluntnose sixgill shark was captured on video lurching toward a submarine that was filming it. And then the Uvic team came in ! Females can have over 80 pups in a litter. Currently, the worldwide population of bluntnose sixgills is unknown but they are listed as "Near Threatened" on the International Union for Conservation of Nature's Red List. A massive bluntnose sixgill shark was captured on video lurching toward a submarine that was filming it. It is related to today's dogfish and Greenland shark, although it is much more closely related to s… They are heavy-bodied, broad-headed sharks with broad, rounded snouts and ventral mouths containing 6 rows of blade-like (saw-like), comb-shaped teeth. Brown or gray above, paler below, with a light stripe along their sides. Sixgill Name Carpet Decal. The maximum size of the bigeye sixgill shark is 5.9 feet (1.8 m) total length. COLOR Brown to dark gray above; off-white below. ", You have 4 free articles remaining this month, Sign-up to our daily newsletter for more articles like this + access to 5 extra articles. They’re considered a dominant predator of the deep sea ecosystem. The maximum length is around 550cm. ... and appears to be smaller in size than the first shark spotted." Size at maturity was estimated for females by comparing gonad development with length-weight measurements. Nevertheless, the researchers suggest that they are perhaps more common than previously appreciated. Females reach maturity at a larger size of roughly 4 m (13 ft) / 400 kg (880 lbs), and they ultimately grow to be larger than males. STATUS: Vulnerable. The team, led by Dean Grubbs, from Florida State University, were conducting dives in a submersible called "Nadir" as part of an expedition organized by OceanX to tag one of the sharks in their deep-sea environment. The shark was found dead on the beach earlier this week.Some pathetic person cut the head off and st... ole the jaw Grrr. Still, the researchers from OceanX — who partnered on the mission with Bloomberg Philanthropies, Florida State University, Cape Eleuthera Institute and Moore Charitable Foundation — were audibly wowed by the deep-sea creature, which they set out to find and attach satellite tags on during this expedition. NYC medic helped 'make ends meet' with racy side gig, Dramatic photo shows couple hiding from gunman outside NYC church, Miley Cyrus celebrates 10-year anniversary of bong video, FKA Twigs supports Sia after she calls Shia LaBeouf a ‘pathological liar’, Eddie Van Halen cremated, wanted ashes scattered off Malibu coast, © 2020 NYP Holdings, Inc. All Rights Reserved, Surfer walks for help after suffering 'catastrophic' injuries from shark, Captivating video captures fish being chased off the Rockaways, Trixie the whale shark dies at Georgia Aquarium, Megalodon fossils discovered all over the world, Evicted Texas tenant had a Bud Light decorating touch, You can get an Instant Pot Duo Nova for 50 percent off at Sur La Table, The best workout equipment you need for your home gym in 2021, Best cozy Christmas gifts of 2020: 20 ideas for the comfiest winter yet, 10 best outdoor heaters to keep your patio warm during winter, These are the best gifts to give yourself — just because. Daily Headlines. The shark was about 20 feet long … At one point the shark even tries to nibble on the spear gun attached to Nadir. Body length… Both Blue Whales and Whale Sharks are the largest in their species and they are both great swimmers, ocean dwellers, fish and crustacean eaters, fear-evokers, and simply awe-inspiring. The Bluntnose Sixgill Shark, Hexanchus griseus, is a large predatory shark, has a worldwide distribution and is listed as near-threatened by the International Union of Conservation of Nature (IUCN).