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Pteropoda (common name pteropods, from the Greek meaning "wing-foot") are specialized free-swimming pelagic sea snails and sea slugs, marine opisthobranch gastropods.Most live in the top 10 m of the ocean and are less than 1 cm long.
Unlike other sea snails, or even land snails, sea butterflies float and swim freely through the ocean, traveling along with the currents.This has led to a number of evolutionary adaptations in their bodies, including complete or near-complete loss of the shell and the gill in several families.
A species of sea snail in its natural habitat: two individuals of the wentletrap Epidendrium billeeanum with a mass of egg capsules in situ on their food source, a red cup coral. A sea snail Euthria cornea laying eggs. Sea snails are slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone.
Etymological meaning of the generic name Limacina is "snail-like". [4] As pelagic marine gastropods, Limacina swim by flapping their parapodia, inspiring the common name sea butterflies. Sea butterflies are part of the clade Thecosomata. Sea angels, similar to Limacina, are in the order Gymnosomata. Both of these orders are still referred to as ...
Crepidula, commonly known as the slipper snails, slipper limpets, or slipper shells, is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae.This family includes the slipper snails (Crepidula), hat snails (), spiny slipper snails (Bostrycapulus), and cup-and-saucer snails as well as Crepipatella, Siphopatella, Grandicrepidula, and Maoricrypta.
Juliidae, common name the bivalved gastropods, is a family of small sea snails, marine gastropod mollusks or micromollusks in the superfamily Oxynooidea, an opisthobranch group. [ 2 ] These are sacoglossan (sap-sucking) sea snails, and many of them are green in color.
The sea snail Nerita textilis (like all gastropods) deposits a mucus trail as it moves, which a chemoreceptive organ is able to detect and guide the snail back to its home site. [31] It is unclear if chiton homing functions in the same way, but they may leave chemical cues along the rock surface and at the home scar which their olfactory senses ...
Peraclidae is a family of pelagic sea snails or "sea butterflies", marine gastropod molluscs in the superfamily Cymbulioidea. [2] This family has no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This family was originally called Procymbuliidae Tesch, 1913 and then called Peraclididae by Wenz in 1938. [2]