David Shale / Midwater pteropod molluscs / Sea butterflies (Clione limacina) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Sea angel{Clione limacina} deepsea, from mid Atlantic ridge, caught between 50 - 200m at night

David Shale / (Cione limacina) sea angel, a pelagic pteropod mollusc from the mid-Atlantic, deep sea Atlantic ocean

Flip Nicklin / Naked Sea Butterfly (Clione limacina) underwater portrait, Arctic

Jordi Chias / Sea angel (Clione limacina), Antarctic Peninsula, Antarctica.

Franco Banfi / Naked sea butterfly sea slug (Clione limacina) swimming in front of iceberg. Tasiilaq, East Greenland. April.

Pal Hermansen / Naked sea butterfly (Clione limacina) against black background.

Jeff Rotman / Planktonic Naked sea angel(Clione limacina) in open ocean, North Atlantic Ocean.

David Shale / Midwater pteropod mollusc / Sea angel(Clione limacina) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Midwater pteropod mollusc / Sea angel(Clione limacina) Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Midwater pteropod mollusc / Sea angel(Clione limacina) Mid-Atlantic Ridge, North Atlantic Ocean

Kerstin Hinze / Sea Slug (Clione limacina) Hokkaido, Japan February 2007