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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.
The sea butterflies form the sole food source of their relatives, the Gymnosomata. [8] They are also consumed by sea birds, whales, and commercially important fish. However, if sea butterflies are consumed in large quantities fish can get "black gut", which makes them unsellable. [1]
Limacina is a genus of swimming predatory sea snails commonly known as sea butterflies in the family Limacinidae. This genus contains some of the world's most abundant gastropod species. [2] [3] Etymological meaning of the generic name Limacina is "snail-like". [4]
Edible molluscs are harvested from saltwater, freshwater, and the land, and include numerous members of the classes Gastropoda (snails), Bivalvia (clams, scallops, oysters etc.), Cephalopoda (octopus and squid), and Polyplacophora (chitons). Many species of molluscs are eaten worldwide, either cooked or raw.
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.
Limacina helicina is a species of small swimming planktonic sea snail, in the family Limacinidae. It belongs to the group commonly known as sea butterflies (Thecosomata). [7] [8] Limacina helicina is a keystone species of mesozooplankton in Arctic pelagic ecosystems. [9] [10] [11]
It's known as a limpet, a small aquatic snail with a distinctive cone-shaped shell. Its teeth are so small, they had to be examined under a microscope. No matter the size of the limpets' teeth ...
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]