Oxynoe panamensis is a species of small sea snail or sea slug, a bubble snail, a marine gastropod mollusk in the family Oxynoidae.
Oxynoe panamensis is found in mangrove swamps along the Baja California peninsula and Mexico coasts.[1] The type locality for this species is Bocas Islands, Panama.[2]
This species feeds on Caulerpa sertularioides, a green siphonaceous algae. When irritated, Oxynoe panamensis excretes a potent, milky toxin from its skin.[1] There is known autotomy of the tail under persistent mechanical irritation.[1]