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The greatest diversity of nudibranchs is seen in warm, shallow reefs, although one nudibranch species was discovered at a depth near 2,500 m (8,200 ft). [10] This nudibranch, described in 2024 as Bathydevius , is the only known nudibranch with a bathypelagic lifestyle and is one of the very few to be bioluminescent .
Dendronotus iris, also known as the rainbow nudibranch, is a species of sea slug, a dendronotid nudibranch, a shell-less marine gastropod mollusc in the family Dendronotidae. [ 2 ] [ 3 ] Distribution
This animal can reach a total length of more than 120 mm. It is a large dark-bodied nudibranch which may have green stripes running down the length of the body or have green raised spots. The margin of the foot and head is a vivid red-orange. The rhinophores and gills may be red or green.
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.
Acanthodoris lutea, the orange-peel doris, is a species of nudibranch or sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Onchidorididae. [2] This species is the largest of the northeastern Pacific onchidorids. [3] It is a common species, and it is very noticeable because of its bright coloration, which is aposematic.
Notobryon wardi is a medium-sized (up to 50 mm) smooth-bodied nudibranch. The body is reddish-brown with iridescent blue-green spots on its sides and back. The smooth rhinophores are surrounded by cup-like sheaths. Two sets of wispy gills are flanked by flattened lobes extending from the body.
This species is small in size (up to 20 mm), with opaque white ridges along the body. The rhinophores (chemosensory tentacles) are small, oval-shaped, and feature longitudinal ridges. This is a pale-bodied nudibranch featuring raised, opaque white longitudinal ridges. [3]
Kaloplocamus ramosus, the tasselled nudibranch, is a species of sea slug, a dorid nudibranch, and a marine gastropod mollusc in the family Polyceridae. [ 1 ] Distribution