Sponges
(Porifera)

 

Flatworms
(Platyhelminthes)


 

Ribbon Worms
(Nemertea)

 

Jellyfishes
(Cnidaria: Scyphozoa & Hydrozoa)


 

Corals
(Cnidaria: Anthozoa)


 

Sea Anemones
(Cnidaria: Anthozoa)


 

Segmented Worms
(Annelida)


 

Bryozoans
(Ectoprocta)


 

Bivalves
(Mollusca: Bivalvia)



 

Snails
(Mollusca: Gastropoda)



 

Sea Hares
(Mollusca: Gastropoda)


 

Horseshoe Crabs
(Arthropoda: Chelicerata)


 

Shrimps and Lobsters
(Arthropoda: Crustacea)


 

Crabs
(Arthropoda: Crustacea)

 

Sea Stars
(Echinodermata: Stelleriodea, Asteroidea)

 

Sea Cucumbers
(Echinodermata: Holothuroidea)

 

Brittle Stars
(Echinodermata: Stelleriodea, Ophiuroidea)


 

Sea Urchins and Sand Dollars
(Echinodermata: Echinoidea)