Shark Biology and Conservation Facts

Where do most sharks primarily live?

• Cold polar waters

• Warm ocean waters

• Freshwater rivers and lakes

• Near volcanic vents

What material makes up a shark's skeleton?

• Bone

• Cartilage

• Calcium

• Chitin

Approximately how many species of sharks are known to exist?

• Less than 100

• Between 100 and 200

• More than 500

• Exactly 300

What is the largest fish in the world?

• Great White Shark

• Basking Shark

• Whale Shark

• Hammerhead Shark

What happens when a shark loses a tooth?

• It grows a new jaw.

• It is replaced by another tooth from a row behind it.

• It cannot eat until a new tooth grows.

• It uses its gums to chew.

What do Great White Sharks prefer to eat over humans?

• Seaweed and algae

• Plankton and krill

• Tuna, dolphins, whales, and seals

• Small reef fish

How do Hammerhead Sharks use their wide heads to catch stingrays?

• They use them to dig into the sand.

• They use them to stun the stingrays with a powerful blow.

• They trap the stingrays against the seafloor.

• They use them to detect electrical signals from stingrays.

What is a significant threat to shark populations worldwide?

• Climate change

• Pollution

• Overfishing by humans

• Natural predators