Star Fish Sea Urchins Sea Cucumbers

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Star Fish Sea Urchins Sea Cucumbers Phylum Echinodermata Star Fish Sea Urchins Sea Cucumbers

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

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

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

Asteroidea

Ophiuroidea – Brittle stars

Echinoidea - Urchins

Holothuroidea – Sea Cucumber

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