Dendronotus dalli is a species of sea slug, a dendronotid nudibranch, a shell-less marine gastropod mollusc in the family Dendronotidae.

[2] This species was described from the Bering Sea.

[1] It can be found along the west coast of North America from the Bering Sea, Alaska to Puget Sound, Washington.

[3][4] Similar looking animals from the White Sea and Barents Sea, North Atlantic have been demonstrated to be a distinct species, Dendronotus niveus.

[5] Dendronotus dalli feeds on the hydroids Abietinaria rigida and Abietinaria amphora, family Sertulariidae.