Echinodermata

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Arthropoda
Mollusca
Echinodermata
Cnidaria

Sand Dollar

Characteristics:
bullet Spiny Skin - in soft form (e.g. sea cucumber) or in rough form (e.g. starfish)
bullet Radially Symmetrical Body - body plan based on five sections or projections
bullet No Eyes or Brains
bullet Bilaterally Symmetrical Larvae

Marine Invertebrates Belonging to this Phylum:
bullet starfish
bullet sea urchins
bullet sand dollars
bullet sea cucumbers

Brittle StarSea UrchinSea Cucumber

All members of the phylum possess a radially symmetrical body plan based on five sections or projection.

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March 25, 2004