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Echinoderms
Fisheries glossary |
A group of marine animals that includes seastars, sea urchins and sea cucumbers, abundant on the floor of the deep sea, as well as in shallower seas.
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Species group, английский
A group of similar species. similar species are often difficult to differentiate without detailed examination.
Mollusc, английский
A group of freshwater and saltwater animals with no skeleton and usually one or two hard shells made of calcium carbonate. includes oysters, clams, mussels, snails, conches, scallops, squid and octopus.
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