Pteropod Zooplankton Collected near Greenland (IMAGE)
Caption
Sea-butterflies or pteropods are pelagic snails that swim through the water and catch food on sticky mucus webs and parachutes. The species Limacina retroversa is most abundant in the sub-arctic Atlantic, and adjoining parts of the Arctic proper. The shells of pteropods are delicate and some species look much like other snails, except for one key difference: the shell spirals in the opposite direction.
Credit
Russ Hopcroft -- University of Alaska Fairbanks & Census of Marine Life
Usage Restrictions
Image Credit required: Russ Hopcroft - University of Alaska Fairbanks & Census of Marine Life
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