Creseis conicaCreseis conica is a species of 'sea butterfly' in the order Pteropoda.DistributionCreseis conica has been observed worldwide in tropical and temperate seas. In islands surrounding New Zealand, the species inhabits underwater, in temperatures ranging from.DescriptionThe species can grow up to long, and is surrounded by a thin and brittle uncoiled shell. A fully grown shell is approximately the same size as the pteropod itself, and is colourless. The diameter of the aperture is 1 millimetre. It has wing appendages and a short columellar muscle. It feeds off of protozoans and phytoplankton, closer to the surface from the ocean.