Phylum Echinodermata

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Phylum Echinodermata

• Spiny skin

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Crown of Thorns Sea Star
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Phylum Echinodermata

• Spiny skin
• Pentamerous radial symmetry

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• Central Disk

• Arms

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Phylum Echinodermata

• Spiny skin
• Pentamerous radial symmetry
• Water Vascular System - Tube feet

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Tube Feet
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Sea Star Feeding
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Phylum Echinodermata

• Spiny skin
• Pentamerous radial symmetry
• Water Vascular System - Tube feet
• Regenerate lost body parts

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Regeneration
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Class Asteroidea

• Sea stars five wide arms connected to central
  disk

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Cushion Sea Star
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Crown of Thorns Sea Star
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Class OphiuroideaBrittle Stars
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Distinct separation between central disk and arms
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Sponge Brittle Star
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(No Transcript)
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Basket Star
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Class EchinoideaSea Urchins central test
with spines
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Long Spined Sea Urchin
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Pencil Sea Urchin
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Sand Dollar
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Sea Biscuit
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Class CrinoideaFeather Stars
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Mouth on top surrounded by feeding appendages
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Feather Star (Crinoids)
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Crinoids
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Class Holothuroidea Sea Cucumbers
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Donkey Dung Sea Cucumber
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Sticky Skin Sea Cucumber
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