Contact | Blog | Project Noah Facebook | Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!

Opalescent nudibranch

Hermissenda opalescens


Colorful, glowing creature a little like a sea slug.


Tidepool in the intertidal zone, mid-Oregon coast.

Species ID Suggestions

Sign in to suggest organism ID


Machi 2 years 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 2 years 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 2 years ago

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

Spotted by

Oregon, USA

Lat: 44.54, Long: -124.02

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

Related Spottings

Hermissenda Hermissenda Nudibranchs Opalescent nudibranch, or hermissenda Opalescent Nudibranch

Nearby Spottings

purple edge bonnet Ruffed grouse Spotting Candlesnuff fungus