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Opalescent nudibranch

Hermissenda opalescens


Colorful, glowing creature a little like a sea slug.


Tidepool in the intertidal zone, mid-Oregon coast.

No species ID suggestions


Machi a year ago

A lot of them take on the colors of their food by incorporating the pigment into their skin (for camouflage). Some may also be brightly colored to warn off predators.

shebebusynow a year ago

True, Machi; I wasn't very precise in my language. Isn't it amazing how much more colorful nudibranches are than land slugs? We have plenty of those and there's no one who would call THEM beautiful. There must be some sort of survival advantage to the sea slugs' colors.

Machi a year ago

It is a sea slug :) Nudibranchs are sea slugs. It's kind of a more general group of slug-like mollusks

Oregon, USA

Lat: 44.54, Long: -124.02

Spotted on Aug 3, 2016
Submitted on Jan 7, 2018

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Hermissenda Hermissenda Nudibranchs Opalescent nudibranch, or hermissenda Opalescent Nudibranch

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