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Nudibranchs are soft gastropod mollusks. They burrow in the sand until feeding time. They ingest toxic sea pens absorbing toxins into their skin and becoming poisonous themselves.

nudibranch, A nudibranch is a member of Nudibranchia, a group of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms. There are more than 3,000 described species of nudibranchs.

Thuridilla lineolata is a species of sea slug, a sacoglossan, a marine gastropod mollusk in the family Plakobranchidae. It is an Indo-Pacific species that lives in or near coral reefs and eats algae.

The colorful and beautiful Spurilla caerulescens is a species of sea slug. It is an aeolid nudibranch, a marine opisthobranch gastropod mollusk.

from ferrebeekeeper


Nudibranch by Dermal Denticles via ferrebeekeeper: Nudibranchs are gastropod mollusks which live in the oceans worldwide from the polar regions to the tropics. The slugs live in virtually all depths and various species range from the shallow intertidal surf to depths of more than over 700m. Although the majority of nudibranchs are benthic creatures which crawl along the seafloor, some prefer other lives and float upside down under the oceans surface or swim in the water column…

NUDIBRANCHIA comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug