echinoderm

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echinoderm

any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers
References in periodicals archive ?
The second category (medium value) includes the brown fish, Actinopyga echinites; the black fish, A.
Growth of Actinopyga echinites and Holothuria scabra (Holothuroidea: Echinodermata) and their fisheries potential (as beche-de-mer) in Papua New Guinea.
The dermis of the sea cucumber Actinopyga echinites has a tensile viscosity of 100 MPa [center dot] s (Motokawa, 1984b).