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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 ...
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 ...
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 unknown why the sea butterflies have returned — but officials encourage beachgoers to swim with them. Elusive sea butterflies mysteriously flock to Israel coast after 29 years. Take a look
Limacina retroversa is a distinct species of swimming planktonic gastropods, belonging to a group of predatory sea snails known as sea butterflies (Thecosomata). The name Limacina retroversa describes the unique morphology of this sea snail, including its slug-like body and coiled, backwards-turning shell. They are typically found in the ...