2. 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

3. 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 years old

4. Bull Shark Males 7 ft in length Females 11.5 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

5. 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

6. 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

7. 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

8. 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

9. Weird & Wonderful Goblin Shark Frilled Shark Wobbegongs Megamouths
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
Velvetbelly Lanternsharks
May glow to find each other or to attract mates
Lanternsharks
Have special cells in their bodies that glow in the dark

10. 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

11. Hangers On….Parasites? Remora fish Pilot fish Tapeworm Copepods
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

12. 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