sea slug

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sea slug,

name for a marine gastropodgastropod,
member of the class Gastropoda, the largest and most successful class of mollusks (phylum Mollusca), containing over 35,000 living species and 15,000 fossil forms.
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 mollusk that lacks a shell as an adult and is usually brightly colored. Sea slugs, or nudibranchs, are distributed throughout the world, with the greatest numbers and the largest kinds found in tropical waters. They creep along the bottom or cling to submerged vegetation, usually in water just below the low tide line. Members of a few species swim on the surface in open ocean. Most sea slugs are under 1 in. (2.5 cm) long, although the largest, found in the Great Barrier Reef of Australia, reaches 12 in. (30 cm). Regarded by many people as the most beautiful of marine animals, sea slugs display a great array of solid colors and patterns. Many have feathery structures (ceratia) on the back, often in a contrasting color. Most sea slugs have two pairs of tentacles on the head, used for tactile and chemosensory reception, with a small eye at the base of each tentacle. Sea slugs graze on small sessile animals such as coelenterates, sponges, and bryozoans. Certain sea slugs that feed on corals and sea anemones ingest the stinging cells of their prey without discharging them; these then pass from the slug's digestive tract to the ceratia, where they are used by the slug for its own defense. Sea slugs are classified in the phylum MolluscaMollusca
, taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period.
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, class Gastropoda, subclass Opisthobranchia, order Nudibranchiata.

sea slug

[′sē ‚sləg]
(invertebrate zoology)
The common name for the naked gastropods composing the suborder Nudibranchia.
References in periodicals archive ?
Apoptotic-like morphology is associated with the annual synchronized death of a population of kleptoplastic sea slugs (Elysia chlorotica).
Significant locality records of nudibranchs and other sea slugs in California and Oregon in 2014-15 are listed systematically by species and documented below.
Joris Koene of the Free University in Amsterdam studied four other sea slug species and found that one always stabbed near the genital opening, while the others stabbed at random, but none went for the head.
The bigger surprise was that after 24 hours, the sea slugs, which are hermaphrodites or possessing both male and female reproductive organs, regenerated their penis and could mate again.
To address this question, the researchers studied the neurons in Aplysia californica, the California sea slug.
SPIKEY J Sea slug EXOTIC 3 A hidden gem under ocean PRECIOUS n Purple glow
Surprisingly, now he's learned that the sea slugs aren't simply stealing what they need to do this from the algae.
Over time, the genes got passed down to other sea slugs.
He's so serious about food, in fact, that he admits to me that the previous night he was in a Korean shop choosing sea slugs and dried squid - trying to work out how he was going to cook them.
TOKYO - The Fisheries Agency plans to introduce stricter penalties on illegal fishing of sea slugs and urchins, seafood stocks for luxury cuisine, to protect marine resources and the environment, agency officials said Saturday.
Sperm trading can help hermaphrodite sea slugs resolve mating conflicts, and it was proposed that payments be cut to British sperm donors.
I love the marine life - I've seen everything from man-eating sharks to sea slugs.