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Basking Shark

Basking Shark

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Basking Shark

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  1. Basking Shark • Have large, oil-filled livers they can swim slowly without sinking • Have teeth, but are hardly used • Can migrate thousands of miles • Swam from Scotland to Canada, 5,958 miles • Filter feeders, feed on plankton

  2. Whale Shark • NOT A WHALE! • Can filter 1,600 gallons of water in 1 hour • More than 18,000 cans of soda! • The largest shark and largest fish • 46 feet in length…15 tons • Females are larger than males • Have about 3,000 teeth • That they do not use • Closes its mouth to swallow food, but can spit out the food it doesn’t like • Whale sharks are viviparous…give birth to live young • Sexually mature at 30 years old • Harmless to people • May live up to 100-150 years old

  3. Bull Shark • Males 7 ft in length • 200 lbs. • Females 11.5 ft in length • 500 lbs. • Feed on fish (other sharks and rays) turtles, birds, mollusks, crustaceans, dolphins • Can swim in FRESH water • Is an aggressive shark • Is one of the most frequent attackers of people as it swims in shallow waters where people swim

  4. Cookie Cutter Shark • cookie-cutter shark eats by taking round (cookiecutter-shaped) bites out of its victims with its long teeth and powerful jaws, mostly attacking large fish and whales (including dolphins) • 20 inches in length • cookiecutter is also known as the cigar shark (due to its color and shape), the luminous shark (because it emits a green glow from its belly), and the Brazilian shark

  5. Hammerhead Shark • Up to 20 ft in length • Have special “third eyelids” • Membrane can cover the eye while the shark thrashes around with prey • Might produce up to 40 pups at once • 8 different species of hammerhead sharks • Feed on stingrays…barbs and all • Some Great Hammerheads have been found with more than 50 spines embedded in the mouth and throat • Their fins are among the most expensive of shark fins when sold

  6. Megalodon • Have teeth that are the size of human hands • 6.5 inches in length • Lived about 20 million to 2 million years ago • 42 ft in length • Some scientists believe the Megalodon could be up to 50 or 100 ft in length • No whole Megalodon fossils have been found • Only jaws and teeth • So no real idea what the shark looked like • Megalodon’s jaw could open 6 ft wide and 7 ft high

  7. Tiger Shark • Garbage cans of the sea • Stingrays, squid, animal antlers, shoes, car license plates, car tires, handbags, and a human hand! • Tiger sharks can grow 24,000 teeth in 10 years • Jaw is so strong it can bite through a turtle’s shell • Can be up to 20 ft in length • Can swim at an average speed of 2.4 mph • The young of tiger sharks are born live in litters of between 10 and 82 pups

  8. Weird & Wonderful • Goblin Shark • Rarely seen • Push their jaw out of their mouth • Frilled Shark • Live up to 5,000 ft. below the ocean surface • Looks like a scary eel • Have 300 many-pronged teeth • Wobbegongs • Live on the seabed in shallow water • Some have tassels of skin that look like seaweed • Megamouths • Live only 500 ft. below the surface • So rare—only a few have been seen • First megamouth was discovered 30 years ago • VelvetbellyLanternsharks • May glow to find each other or to attract mates • Lanternsharks • Have special cells in their bodies that glow in the dark

  9. Shark Attacks! • The great white shark is at the top of the food chain…21 ft long predator is dangerous to fish and mammals and rarely humans • More people are killed by jellyfish than great white sharks • Great Whites cruise at 2 mph, but when it finds prey the shark shoots forward at 15 mph! • Most shark attacks are a case of mistaken identity…most surfers look like seals from below the surface of the water

  10. Hangers On….Parasites? • Remora fish • Attach themselves to the shark for a free ride • Eat food that falls out of the sharks’ mouth • Clean the sharks…eat the parasites on the sharks’ skin • Pilot fish • Swim with the sharks (protection) • Won’t get eaten by sharks…too quick • Feed on the sharks’ parasites…and dung! • Tapeworm • More than 3 ft in length • Live inside sharks’ gut absorbing food • Copepods • Crustaceans • Stick onto sharks’ fins…females lay eggs on the sharks fins • 1 species lives in the EYE of the Greenland shark • Feeds on the eye…but once done it can’t swim away

  11. Hunting Sharks • Shark cartilage and fins are used in traditional medicine • Shark skin is turned into leather for making shoes, handbags, wallets, and even sword handles • Shark liver oil, called squalene, is used in cosmetics • Sharks are also hunted for sport • Most sharks are caught just for their fins. • Some are “finned” while still alive, then thrown back to the sea • Mako shark steaks are sold in some supermarkets • Shark jaws are sold as souvenirs…some species can only be sold internationally if the seller has a special permit