Echinderms are a phylum of marine invertebrates that live in oceans around the world. They include sea urchins, sea cucumbers, brittle stars, and sea lilies. Echinderms have spiny skin, radial symmetry as adults, and lack intestines and anuses. They can be found in shallow waters and deep seas in temperate, tropical, and polar regions.

1. Echinderm Echinderm means spiny skin The largest phylum without any freshwater or terrestrial forms 7,000 living species 13,000 extinct species 25 recognized classes LOOKING FOR IDEAL MATE THAT IS AS COOL AS I AM

2. Some info Subkingdom—eumetazoa, bilateria, deuterostomia Phylum—echinderms Class—echinoidea, holothuroidea, stelleroidea, crinoidea

3. Lookin’ for me? Can be found in all oceans Marine environments Shallow waters at tide lines to deep sea Temperate, tropical, polar, saltwater Not picky on living environment, just has to be in water

4. Some more info Internal skeleton present Ossicles make up skeleton below outer dermal layer Adults are radially symmetrical Larval forms bilateral Radial symmetry is secondarily derived Lack intestines and anus

5. My interests Chillen Floating/drifting around Filter feeding Suspension feeding Grazing on algae I love to party (can’t be any otters or flounders present)

6. I’m unique because… Non-centralized nervous systems Water vascular system (extensions) Have cardiac stomach

7. What I’m looking for Able to live in water Can’t be an otter or flounder Have to be symmetrical Can’t care about offspring Can’t be too fast