Stearns' Aeolid

Austraeolis stearnsi

Austraeolis stearnsi is a small sea slug that typically reaches a body length of up to 25 mm. This aeolid nudibranch is characterized by its brilliant orange or yellowish coloration, which makes it easily identifiable. It possesses long foot corners and oral tentacles, features that distinguish it from similar species in its family. The radular teeth are shaped for feeding on hydroids, indicating its dietary preferences. This species is primarily found in the Eastern Pacific region, having been described from areas in California and Mexico. It inhabits benthic environments and is often spotted at various dive sites. The depth range for Austraeolis stearnsi is not specified, but it is typically associated with subtropical waters. Austraeolis stearnsi is a simultaneous hermaphrodite, engaging in unique mating behaviors where individuals may alternate roles between male and female during reproduction. Eggs are laid on substrates, developing into a planktonic larval stage before maturing into adults. Encounters with this species during dives can be intriguing, as divers observe its distinct coloration and feeding habits among hydroids. The conservation status of this species has not been evaluated, indicating a need for further research on its population dynamics.