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The exact systematics of nudibranchs are a topic of recent revision. Traditionally, nudibranchs have been treated as the order Nudibranchia, located in the gastropod mollusc subclass Opisthobranchia (the marine slugs: which consisted of nudibranchs, sidegill slugs, bubble snails, algae sap-sucking sea slugs, and sea hares). [44]
Peronia indica is a species of air-breathing sea slug, a shell-less marine pulmonate gastropod mollusk in the family Onchidiidae. [ 10 ] The largest species of sea hare, the California black sea hare, Aplysia vaccaria can reach a length of 75 centimetres (30 in) and a weight of 14 kilograms (31 lb). [ 11 ]
The order Cephalaspidea, also known as the headshield slugs and bubble snails, is a major taxon of sea slugs and bubble snails, marine gastropod mollusks within the larger clade Euopisthobranchia. [1] Bubble shells is another common name for these families of marine gastropods, some of which have thin bubble-like shells. [2]
Gastropteridae, the bat-winged slugs, is a family of sea slugs, gastropod molluscs in the superfamily Philinoidea of the clade Cephalaspidea, the headshield slugs and bubble snails. [2] The greatest diversity of these colourful small slugs is in the tropical and sub-tropical Indo-Pacific region.
This species has a maximum size of 70 mm. [2] The background color is deep black. The margin of the parapods and body are marked with a thin electric blue line. The two rather long "tails" at the end of the animal are characteristic of the genus Chelidonura, the left one is always longer. They have also well-developed sensory cilia on the ...
Costasiella ocellifera is a small (5–13 mm) species of sea slug, a shell-less marine gastropod mollusk in the family Costasiellidae. [2] Costasiella ocellifera, and other members of the family Costasiellidae are often mistakenly classified as nudibranchs because they superficially resemble other species of that group, but they are actually a part of the Sacoglossa superorder of sea slugs ...
A unique new species of sea slug. Bathydevius typically lives thousands of feet below the surface, far from the coastal tide pools or kelp forests that many sea slugs prefer.
Philine aperta, the sand slug, is a species of predatory sea slug with an internal shell, a cephalaspid opisthobranch, or head-shield slug. It is a marine gastropod mollusc in the family Philinidae .