Diaulula boreopacifica
# Diaulula boreopacifica

Diaulula boreopacifica is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Discodorididae.

## Distribution

This dorid nudibranch occurs in the northern Pacific, from Northern California to Alaska, Japan and Russia. It has been confused with Diaulula sandiegensis which has a more southerly range from California south to Baja California, Mexico.

## Description

This nudibranch has a background colour which can be white or any shade of yellow to a yellowish brown with characteristic markings consisting of many brown spots of varying sizes. These spots are surrounded by a paler ring and extend into the outer part of the mantle. It grows to about 70 mm (3") in length.

## Life habits

This species feeds on the sponge Haliclona sp.. It is most common in the intertidal region.

