Horn Sharks and Benthic Animals

The video, presented by Hayden Peterson from the Ocean Institute, brings a shark and ray feeding experience to viewers at home. It covers the characteristics of cartilaginous animals, focusing on horn sharks, rays, and guitar fish. The video explains their feeding habits, gender identification, and unique adaptations for breathing. It concludes with a farewell message, encouraging viewers to learn more about these fascinating creatures.

What is the main characteristic of cartilaginous animals?

• They have skeletons made of cartilage.

• They have no skeletons.

• They have bones made of calcium.

• They have exoskeletons.

How do horn sharks prefer to be fed?

• At the bottom of the tank.

• In the middle of the tank.

• Outside the tank.

• At the top of the tank.

What is the purpose of the flattened mouths in rays and guitarfish?

• To swim faster.

• To crush shelled animals.

• To communicate with other fish.

• To breathe underwater.

What unique feature helps benthic animals breathe while feeding on sand?

• Fins that filter water.

• Gills on their sides.

• Spiracles behind their eyes.

• Lungs inside their bodies.

Where are the eyes of benthic animals typically located?

• On the bottom of their heads.

• In front of their mouths.

• On the sides of their heads.

• On the top of their heads.

What causes horn sharks to change their color?

• Water salinity.

• Sun exposure.

• Temperature changes.

• Diet changes.

What do horn sharks use their sharp teeth for?

• To scare predators.

• To attract mates.

• To pierce and crush food.

• To swim faster.

What is the average size of most sharks and rays?

• Twice the size of horn sharks.

• Larger than horn sharks.

• Smaller than horn sharks.

• About the size of horn sharks.

Why is it important to feed the animals properly?

• To keep them entertained.

• To ensure their health and well-being.

• To change their color.

• To make them grow faster.

What is the main diet of the animals in the tank?

• Coral and sponges.

• Small fish and insects.

• Shrimp and krill.

• Seaweed and algae.