WHAT'S INSIDE: MARINE LIFE
- Corals & Jellies
- Starfish & Related Organisms
- Other Marine Life
The echinoderm is a member of a large group (phylum) of spiny-skinned marine animals, including starfish, sea urchins, and sea cucumbers.
As you observe jellyfish twirl underwater, it's difficult not to be mesmerized by their graceful movements. But if their tentacles touch your skin, you'll regret being anywhere near these gelatinous blobs.