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Nudibranch molluscs are the most commonly cited examples of aposematism in marine ecosystems, but the evidence for this has been contested, [21] mostly because few examples of mimicry are seen among species, many species are nocturnal or cryptic, and bright colours at the red end of the spectrum are rapidly attenuated as a function of water depth.
Before finding G. atlanticus off Andhra Pradesh, these nudibranchs were documented as having been seen in the Bay of Bengal and off the coast of Tamil Nadu, India, over 677 km apart. [17] G. atlanticus was also recently found off Bermuda in January 2016, [18] and uncommonly washes ashore on east coast beaches at Barbados, Lesser Antilles.
Hermissenda crassicornis, also known as the opalescent nudibranch or thick-horned nudibranch, is a species of brightly coloured, sea slug or nudibranch, a marine gastropod mollusc in the family Facelinidae.
Nudibranch molluscs are the most commonly cited examples of aposematism in marine ecosystems, but the evidence for this has been contested, [37] mostly because (1) there are few examples of mimicry among species, (2) many species are nocturnal or cryptic, and (3) bright colours at the red end of the colour spectrum are rapidly attenuated as a ...
Bathydevius (Greek for "deep-living deviation") is a monotypic genus of unusual, highly distinctive nudibranch native to deep waters of the North Pacific Ocean.It contains a single species, B. caudactylus ("finger tail"), and is the only known member of the monotypic family Bathydeviidae.
Pteraeolidia ianthina is a sea slug, an aeolid nudibranch in the family Facelinidae. [ 2 ] [ 3 ] It is known as a blue dragon , [ 4 ] a name it shares with Glaucus atlanticus and Glaucus marginatus .
Hermissenda opalescens is a species of brightly coloured sea slug or nudibranch, a marine gastropod mollusc in the family Facelinidae. [ 2 ] This species is commonly known as the "opalescent sea slug."
The Mollusca, common name molluscs or mollusks, is a large phylum of invertebrate animals. There are at least 85,000 recognized extant species of molluscs. This is the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats.