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Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods , i.e. they are sea snails (marine gastropod mollusks ) that, over evolutionary time, have either entirely lost their shells or have seemingly lost their shells due to having a ...
The sea slugs can move toward prey or mates by using their cerata, the thin feather-like "fingers" on its body, to make slow swimming movements. [ 10 ] [ 22 ] They are known to prey on the dangerously venomous Portuguese man o' war ( Physalia physalis ), the by-the-wind-sailor ( Velella velella ), the blue button ( Porpita porpita ), and the ...
All known nudibranchs are carnivorous. [34] Some feed on sponges, others on hydroids (e.g. Cuthona), [38] others on bryozoans (phanerobranchs such as Tambja, Limacia, Plocamopherus and Triopha), [39] and some eat other sea slugs or their eggs (e.g. Favorinus) [40] or, on some occasions, are cannibals and prey on members
Some sea slugs are very brightly colored. This serves either as a warning, when they are poisonous or contain stinging cells, or to camouflage them on the brightly colored hydroids, sponges, and seaweeds on which many of the species are found. [citation needed] Lateral outgrowths on the body of nudibranchs are called cerata.
In addition to trapping prey, the slug's hood can snap shut and propel the animal away from danger. Predators might overlook the sea slug's transparent body or be startled by its bioluminescence ...
Glaucus is a genus of small blue pelagic sea slugs.They are aeolid nudibranchs, [1] ranging in size from 20 to 40 mm (0.79 to 1.57 in). [2] They feed on colonial cnidarians such as Portuguese man o' wars, blue buttons, and purple sails.
The green slugs have algae cells in their skin, so they can feed off light like a plant until they develop a new body, which takes about 20 days. Sea slugs lose heads to rid bodies of parasites ...
Navanax inermis, common name the California aglaja, is a large species of predatory sea slug, a marine opisthobranch gastropod mollusk in the family Aglajidae. Navanax is not a nudibranch, even though it somewhat resembles one; it belongs to a more ancient lineage of opisthobranchs called the cephalaspideans or head shield slugs and snails.