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PRS Field Guide | Marine Invertebrates

Invertebrates refer to animal species that do not have a backbone and are ectothermic (cold-blooded). In our marine environment, this category includes mollusks (e.g. oysters, clams, mussels, scallops), crustaceans (e.g. shrimp, crabs), as well as corals, worms, and more. Marine invertebrates are a susceptible group of species in our watershed because most of them can’t move (or can’t get very far) to get away from pollution. 

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Portuguese Man-O-War

Physalia physalis

Classification: Marine Invertebrate

Status: Not Evaluated

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Oyster Pea Crab

Zaops ostreus

Classification: Marine Invertebrate

Status: Not Evaluated

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Green Porcelain Crab

Petrolisthes armatus

Classification: Marine Invertebrate

Status: SNA/Exotic

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Ocellate Lady Crab

Ovalipes ocellatus

Classification: Marine Invertebrate

Status: SNR (exotic/introduced)

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Stone Crab

Menippe mercenaria

Classification: Marine Invertebrate

Status: SNR (exotic/introduced)

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Cannonball Jelly

Stomolophus meleagris

Classification: Marine Invertebrate

Status: Not Evaluated

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Blue Crab

Callinectes sapidus

Classification: Marine Invertebrate

Status: Not Evaluated

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Eastern Oyster

See this animal live at the Maritime Center.

Crassostrea virginica

Classification: Marine Invertebrate

Status: Not Evaluated

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Marsh Periwinkle Snail

Littoraria irrorata

Classification: Marine Invertebrate

Status: Not Evaluated

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Sand Fiddler Crab

Uca pugilator

Classification: Marine Invertebrate

Status: Not Evaluated

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