Habitat
This is a well known species which has been reported on the Pacific Ocean coast of North, Central and South America from Point Craven, Alaska to the Gulf of California, Panama, Chile and Argentina.

Rostanga pulchra, MacFarland, 1905
Rostanga pulchra is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Discodorididae.
This is a well known species which has been reported on the Pacific Ocean coast of North, Central and South America from Point Craven, Alaska to the Gulf of California, Panama, Chile and Argentina.
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