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In the case of the diamondback tritonia, these nudibranchs are typically light pink, orange or white in color [7] and have an intricate pattern along their back. This pattern can vary amongst individuals. [8] They also possess a vestigial girdle of chitinous ridges that separates them from other nudibranch species. [9]
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.
Nudibranchs live at virtually all depths, from the intertidal zone to depths well over 700 m (2,300 ft). [7] 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 ]
Bathydevius is a bizarre nudibranch with a highly unusual appearance, ecology, and taxonomy. It is the first known nudibranch to inhabit the bathypelagic zone, and only one of very few pelagic, free-swimming genera within this generally benthic group.
Janolus fuscus, head end towards the top. The bodies of nudibranchs in this species are semi-translucent and whitish-grey, and reach lengths of about 35mm. The body is covered in short cerata with brown cores, and the exterior fades to orange and then white at the tip.
Doris odhneri is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Dorididae. [2] [3] It is known by many common names, such as: giant white nudibranch, giant white dorid, and white-knight nudibranch.
Spurilla neapolitana, the Neapolitan spurilla, is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Aeolidiidae. It is native to the western Atlantic Ocean, the Caribbean Sea and the Mediterranean Sea. This species was first described as Eolis neapolitana by the Italian naturalist Stefano delle Chiaje in 1841.
Scyllaea pelagica is a sturdy nudibranch that grows to a length of about 10 cm (4 in). It is dorso-ventrally flattened. It is dorso-ventrally flattened. At the anterior end there are two pairs of sensory tentacles and a pair of rhinophores enclosed in large rhinophore sheaths.