[2] This species occurs in the Arctic seas; (Greenland, Iceland, Spitsbergen, North Pacific (Bering Strait, Point Barrow, Alaska, British Columbia), the Western Atlantic (Cape Cod (Mass.)

The white, translucent, broad body of this species reaches a length between 25 and 50 mm, and ends in a thin, tapered tail.

There are opaque white markings at the tips of the cerata and on the outer parts of the rhinophores and oral tentacles.

These sea slugs can be found consuming the colonial tunicate Amaroucium constellatum Verrill, 1871 which is an unusual diet for an aeolid nudibranch.

[4] The salmon aeolis, like other nudibranchs, is a simultaneous hermaphrodite with reciprocal mating and sperm storage.