Take this shark quiz and test what you know about the ocean's top hunters, from the biggest and fastest sharks to glowing, grass-eating and river-going ones.
What is the largest living shark, and also the largest fish in the world? Choices: Great white shark, Basking shark, Whale shark, Tiger shark
What is the largest predatory shark alive today, famous for hunting seals and sea lions? Choices: Great white shark, Hammerhead shark, Blue shark, Nurse shark
Instead of hard bone, what light and flexible tissue makes up a shark's whole skeleton? Choices: Keratin, Cartilage, Muscle, Chitin
Which shark is the fastest swimmer in the ocean, often said to reach bursts of about 70 km/h (45 mph)? Choices: Whale shark, Bull shark, Lemon shark, Shortfin mako
Which shark is nicknamed the "garbage can of the sea" because it has swallowed tires, license plates and metal cans? Choices: Tiger shark, Hammerhead shark, Great white shark, Mako shark
Which shark uses its very long tail, as long as its body, to slap and stun schools of fish? Choices: Blue shark, Leopard shark, Thresher shark, Angel shark
Roughly how many teeth can a single shark grow, lose and replace during its lifetime? Choices: About 300, About 3,000, About 30,000, About 3 million
Which shark can live in fresh water and has been found thousands of kilometers up the Amazon and far up the Mississippi? Choices: Blue shark, Bull shark, Whale shark, Hammerhead shark
Which deep-sea shark glows with a blue-green light on its belly to hide its shadow from animals swimming below? Choices: Lemon shark, Hammerhead shark, Lanternshark, Mako shark
Sharks have no gas-filled swim bladder, so which large, oil-filled organ helps keep them from sinking? Choices: Liver, Stomach, Heart, Lungs
What is the trance-like state called that many sharks fall into when they are gently turned upside down? Choices: Hibernation, Echolocation, Camouflage, Tonic immobility
What is one of the smallest sharks in the world, only about 20 cm (8 inches) long when fully grown? Choices: Leopard shark, Dwarf lanternshark, Nurse shark, Blacktip reef shark
Which small hammerhead is known for eating a diet that can be up to about 60% seagrass? Choices: Bonnethead, Great hammerhead, Scalloped hammerhead, Winghead shark
Which small deep-sea shark bites neat round plugs of flesh out of whales, tuna and even submarines? Choices: Wobbegong, Lemon shark, Blue shark, Cookiecutter shark
Which rare deep-sea shark, often called a living fossil, catches prey by shooting its jaws far out of its head? Choices: Sawshark, Goblin shark, Angel shark, Megamouth shark
Which shark may have the longest pregnancy of any animal with a backbone, estimated at about 3.5 years? Choices: Nurse shark, Hammerhead shark, Great white shark, Frilled shark