Nudibranch Range
Fast Facts
Type: Invertebrate Diet: Carnivore Average life span in the wild: Up to 1 year Size: 0.25 to 12 in (6 mm to 31 cm) Weight: Up to 3.3 lbs (1.5 kg) Did you know?
More on Nudibranch
Sea Slug - name for a marine gastropod 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 l...
Nudibranchs
Phylum Mollusca ( soft )
Class Gastropoda ( stomach foot)
Subclass Opisthobranchia (posterior gill)
Order Nudibranchia (naked gill) ...
Nudibranchs (~300 species)
(bubble-shells, sea hares and other sea slugs)
Blue glaucus (a pelagic nudibranch), Glaucus atlanticus
Crustaceans (~59 species) ...
Raising nudibranchs and octocorals
*Stephanie Moquin (University of New Mexico, May/ June)
Coral reef ecological stoichiometry
Prof. Catherine Lovelock, Dr John Pandolfi and Dr Ruth Reef (University of Queensland, June/ July) ...
Another nudibranch (Ceratosoma amoena). They're kind of the pittas of the diving world, only easier to find.
Gastropods: Nudibranch (Cadlina luteomarginate), Sea Hare (Aplysia califormica), Jeweled Top Snail (Calliostoma annulatum), Sea Lemon (Anisoclons nobilis), Abalone, Sea Clown nudibranch (Triopha catalinae) California Mussel (Mytilus californianus), ...
Discussion The red nudibranch Crimson Doris is almost invariably present on the Velvety Red Sponge on which it preys and lays coiled, red egg-masses that match the sponge in color.
eNature Quicklinks
WildlifeGuides: Nature in North America ...
lettuce nudibranch (Elysia crispata)
long-spined urchin (Diadema sp.)
long-tentacled anemone (Heteractis malu)
maxima clam (Tridacna maxima)
mine urchin (Eucidaris tribuloides)
moon coral (Favites sp.)
moon jellyfish (Aurelia aurita) ...
In many of the Nudibranchiate Opisthobranchs the nervous system presents a concentration of the ganglia (fig. 48), contrasting greatly with what we have seen in Aplysia.
Sea slugs are also called nudibranchs.
Nudibranchs are simultaneous hermaphrodites, which means that they possess both male and female sex organs at the same time.
Most gastropods have a single, coiled shell, although some molluscs such as nudibranchs and terrestrial slugs are shell-less. As stated above, the coiling of the shell is not related to torsion and is simply the way the shell grows.
In one large group of sea slugs, the gills are arranged as a rosette of feathery plumes on their backs, which gives rise to their other name, nudibranchs.
There are also at least two species of crabs - including the large, beautiful Gulfweed Swimming Crab - a relative of the Blue Crab. There are flatworms and mollusks known as nudibranchs.
 See also: Coral, Shell, Snail, Sponge, Sea Slug
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