Anatomy
Some members of the diverse genus Beroe may occasionally attain a length of up to 30 centimetres (12 in), though most species and individuals are less than about 10 cm; Neis cordigera is among largest species in the class. The sack-like body of the Beröe species may be cylindrical in cross section, or compressed to varying amounts by species, while Neis is somewhat flattened and characterized by a pair of trailing gelatinous "wings"that extend beyond the aboral pole.
Like other comb jellies, the body wall of nudans consists of an outer epidermis and an inner gastrodermis, separated by a jelly-like mesoglea. The mesoglea has pigments that give many nudan species a slightly pink color; Neis cordigera may be yellowish or a deep orange-red.
Read more about this topic: Nuda
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