1. Star Fish Sea Urchins Sea Cucumbers
Phylum Echinodermata
Star Fish
Sea Urchins
Sea Cucumbers

2. Phylum Echinodermata Number of Species: ~6,000 Habitat
1. Marine only!
C. Symmetry: Radial (5 part)
1. Embryo develops as bilateral
Reproduction
Asexual – Regeneration
Sexual – Most are separate sexes

3. Phylum Echinodermata E. Amazing facts
1. Female Sea Star can deposit 2.5 million eggs at one time.
2. 1 hr. Crown of Thorns sea star can destroy 60 ft of coral reef

4. Phylum Echinodermata F. Important Structures 1. Water Vascular System
2. Stomach
3. Anus (microscopic)
G. Advances over arthropods
1. Embryonic development

5. Asteroidea

6. Ophiuroidea – Brittle stars

7. Echinoidea - Urchins

9. Holothuroidea – Sea Cucumber