Shark and Fish Interaction Quiz

Why do most sharks not eat the fish that scratch against them?

• Sharks are too slow to catch the fish.

• Fish are poisonous to sharks.

• Sharks are picky eaters and have specific prey preferences.

• Sharks are afraid of the fish.

What type of sharks are most commonly observed allowing fish to scratch against them?

• Reef sharks

• Freshwater sharks

• Pelagic sharks

• Bottom-dwelling sharks

What is a potential negative effect on sharks when fish scratch against them?

• Fish can transfer parasites to sharks.

• Fish can steal food from sharks.

• Fish can slow down the shark's swimming speed.

• Fish can damage the shark's skin.

How does the texture of shark skin vary among different species?

• Sharks in fast currents have larger denticles.

• Sharks in open oceans have smaller denticles.

• All sharks have the same skin texture.

• Sharks in deep water have the smoothest skin.

Which shark species is known for having very small denticles?

• Thornback ray

• Poor beagle shark

• Nurse hound

• Gulper shark