Diplulmaris antarctica is a species of Antarctic jellyfish in the family Ulmaridae.

It has reddish-orange stomach gastrodermis and frilled oral arms of the same colour.

These hyperiid amphipods appear as white dots on the surface of the bell, and do not appear to eat the medusa.

[3] Diplulmaris antarctica feeds on copepods, euphausiid larvate, medusae, ctenophore, fish larvae,[2] and molluscan pteropods such as Clione antarctica[4] and Limacina antarctica.

[4] This species is found in Antarctica including the Antarctic Peninsula in continental shelf waters near the surface.