Tochuina nigritigris is a species of dendronotid nudibranch, in the family Tritoniidae,[2] that is 82 mm long.

Scientists named the species nigritigris, a combination of the words "black" and "tiger" in Latin, because of its dark and light stripes.

[3] The body of the nudibranch is elongated and narrow, surrounded by numerous, densely packed glandular projections that makes them look ruffled.

Tochuina nigritigris has short and white rhinophores with 9 simple lamellae, located on the anterior end of the notum.

[1][4] Tochuina nigritigris was discovered by the MBARI on Guide Seamount, an underwater mountain off the coast of Central California, where it was found crawling on volcanic rocks 1,730 meters below the surface, near some dead clumps of coral.