Shell-less pteropod or swimming snail, clione limacina, found in both Arctic and Antarctic waters, which preys exclusively on its fellow shelled pteropods.
Sand-flea hyperoche capucinus, a common predator swimming
in polar waters.
Chionodraco hamatus, one of the Antarctic’s ice fish, which can
withstand temperatures that freeze the blood of all other types of fish.
Pelagonemertes rollestoni hunting for zooplankton prey that it will
harpoon with a dart attached to the tongue coiled within it.
Its yellow stomach reaches out to feed all parts of the body.
Swimming snail, limacina helicina, occurring in both Arctic and Antarctic
waters. It spins a mucus-net off its paddle-like foot-wings to trap algae
and other small particles on which it feeds.
Platybrachium antarcticum, going through the deep Antarctic waters
hunting the shelled pteropods (another type of snail) on which it feeds.
Calycopsis borchgrevinki, which is one of the more common
hydromedusae encountered in Antarctic waters.