calcareous sponge
plural of Stikeleather
plural of tughra
Any of many sponges, of the class Calcarea, having skeletons composed of spicules of calcium carbonate
(anatomy) Within the jugular.
サンゴ礁を調査している間、その生物学者はさらに詳しく調べるために小さな石灰質海綿を注意深く採取した。
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