1. The Marine Biome Marine Invertebrates: Echinodermata

2. Sea Stars Sea Urchins Sand Dollars Sea Cucumbers

3. Body Type Radial symmetry Lack a brain and sensing organs Mouth is on underside of the body No “real” eyes, but are sensitive to light Regeneration abilities

4. Motion Thousands of tiny tube feet. Many have suctions cups on the ends.

5. Food Urchins are omnivores ▫ Mostly seaweed Stars are carnivores / scavengers ▫ Mussels, clams, oysters, dying fish Some rays, sharks and other large, bony fish are predators. Crabs will pick off urchins’ spines to get to the flesh.

6. Importance For the Biome: ▫ Efficient scavengers on ocean floor

7. Examples Conical Sea Cucumber

8. Examples Cushion Star

9. Examples Orange Starfish

10. Examples Sunflower Starfish

11. Examples Feather Stars

12. Examples Brittle Star

13. Examples Basket Star

14. Examples Sea Urchin

15. Videos Sand Dollar. It’s Alive!