Mollusks and similar sea creatures

What are mollusks?

Snails

Bivalves

Octopuses and squids

What are crustaceans?

What are features of crustaceans?

Lobsters and crabs

Shrimp and krill

Barnacles

What are echinoderms?

Starfish and sea urchins

Sea cucumbers and sand dollars

What are cnidarians?

Corals

Jellyfish

Portuguese men-of-war

What are sponges?

How are ocean invertebrates endangered?

Protecting ocean invertebrates.