Tidepool Animals. Sea stars, sea urchins and other echinoderms have tube feet that act like suction cups. Why? Sea stars have tough skin and sea urchins.

Tidepool

Animals

Sea stars, sea urchins and

other echinoderms

have tube feet that act

like suction cups.

Why?

Sea stars have tough skin

and sea urchins have

pointy spikes.

Why?

Sea anemones belong to a group of animals called cnidaria

A common characteristic is that they have a ring of stinging tentacles to stun prey that swims by.

Can you think of any other animals that live in the ocean that have stinging tentacles?

How does the spiny lobster protect itself if doesn’t have large claws?

Lobsters and other arthropods have an exoskeleton. What’s that?

Snails belong to a group of animals called mollusks. Most mollusks have a shell and a muscular foot. Why?