sea walnut

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sea walnut,

common name for some members of the phylum CtenophoraCtenophora
, a small phylum of exclusively marine, invertebrate animals, commonly known as comb jellies. Because they are so delicate that specimens are difficult to collect, little was known about them until the advent of blue-water scuba and submersible collecting.
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, whose members are also called comb jellies.
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References in periodicals archive ?
European walnut, French walnut, English walnut, Italian walnut, etc, Ancona walnuut, Circassian walnut, Persian walnut and Black Sea walnut.