Key Characteristics of Phylum
How Many Species in Phylum
7,000
Structure and Function
Habitat
- Live exclusively in marine environments
- They occur in various habitats from the inter-tidal zones down to the bottom of the deep sea trenches
Interesting Facts
- Sea Stars can regenerate; some can grow and entire body from one arm
- Echinoderms have no blood
- Echinoderms are predators