Felimare californiensis, common name the California blue dorid, is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae that eats dysideid sponges.

[1][2] This nudibranch is found in the Eastern Pacific Ocean along the Californian coast from Monterey Bay through Baja California.

[3] It became regionally extinct in the northern part of its range, disappearing completely from California by 1984.

It reappeared beginning in 2003 and is now found in a few isolated places in California.

[5] Felimare californiensis has a blue mantle and foot with moderately large yellow-orange spots.