sea urchin

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Related to Arbacia: Crangon

sea urchin

n.
Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a rounded, radially symmetrical, calcareous skeleton covered with long spines.

sea urchin

n
(Animals) any echinoderm of the class Echinoidea, such as Echinus esculentus (edible sea urchin), typically having a globular body enclosed in a rigid spiny test and occurring in shallow marine waters

sea′ ur`chin


n.
any echinoderm of the class Echinoidea, having a somewhat globular or discoid form and a shell composed of many calcareous plates covered with projecting spines.
[1585–95]

sea urchin

Any of various invertebrate sea animals having a round body covered by a shell with movable spines. Sea urchins are related to starfish.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sea urchin - shallow-water echinoderms having soft bodies enclosed in thin spiny globular shellssea urchin - shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
echinoderm - marine invertebrates with tube feet and five-part radially symmetrical bodies
class Echinoidea, Echinoidea - sea urchins and sand dollars
Echinus esculentus, edible sea urchin - a sea urchin that can be eaten
sand dollar - flattened disklike sea urchins that live on sandy bottoms
heart urchin - sea urchin having a heart-shaped body in a rigid spiny shell
Translations
merisiili
hérisson de mer
קיפוד ים
tengeri sün
ígulker
zee-egel

sea urchin

nriccio di mare

sea urchin

n erizo de mar
References in periodicals archive ?
5 psu) with two species of Atlantic sea urchin: Arbacia lixula and Paracentrotus lividus.
ABSTRACT Populations of the black sea urchin Arbacia stellata present in the Gulf of California and outer Pacific Coast area are probably the result of colonization from the Panamic region.
15] in T ventricosus was similar with the isotopic signal of the omnivorous sea urchins Centrostephanus tenuispinus, Phyllacanthus irregularis, Strongylocentrotus pallidus and Arbacia lixula (Vanderklift et al.
Genetic variation within and between geographically separated populations of the seaurchin, Arbacia punctulata.
Population differences in egg quality of Arbacia lixula (Echinodermata: Echinoidea): proximate composition of eggs and larval development.
detritivoro 12 Echinoidea 23 Arbacia spatuligera predador 8 24 Tetrapygu sniger herbivoro 5 Holothuroidea 25 Cucumaria dubiosa filtrador 3 26 Cucumaria sp.
Familia Arbaciidae Gray, 1855 Arbacia punctulata (Lamarck, 1816)
Normal Embryogenesis in Arbacia, Katie Hopkins, Susan Roy, Department of Biology, Presbyterian College
Hemisquilla ensigera californiensis, Dromidia larraurei, Pteria sterna, Arbacia incisa, and Centrostephanus coronatus) represented new records at one or more islands.
American lobsters, rock crabs, Jonah crabs, spider crabs, sea stars, and urchins, Arbacia punctulata, are found on these reefs (Westman, 1958; Cobb, 1971; Briggs and Zawacki, 1974; Briggs, 1975; Alfieri, 1975; Sheehy, 1976; Feigenbaum et al.