| The pteropod mollusk Clione limacina swims by flapping a pair of wing-like parapodia. |
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| The pteropod, Cfione limacina differs from the nudibranchs and notaspids discussed so far in that it swims continuously using paired parapodial appendages that resemble wings. |
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| Initially, Walcott considered Matthevia to be a snail, either a pteropod or a new form of equivalent rank, although he made this assignment with reservation. |
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| In addition to its operation in some insects, it has been suggested that the flapping mechanism in the pteropod, Clione limacina, uses a clap-and-fling mechanism. |
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| The pteropod Limacina helicina thus has an important part to play in the food chain and functioning of the Arctic marine ecosystem. |
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| Below, for example, is a screen grab of a slidable interactive graphic depicting the effects of elevated ocean acidity on a pteropod, an essential part of the marine food chain. |
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| In 2008, scientists on board a British scientific research vessel collected samples of pteropod snails from the Scotia Sea in the Atlantic sector of the Southern Ocean. |
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| Thus, the calcareous oozes include globigerina ooze, containing the shells of planktonic foraminifera, and pteropod ooze, made up chiefly of the shells of pelagic mollusks. |
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| For fans of the undersea sci-fi classic The Abyss, a pteropod seems a likely inspiration for the ethereal alien creatures that were the saviors at the film's end. |
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