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The Thecosomata (collective/plural: thecosomes, [1] meaning "case/shell-body"), [2] or sea butterflies, are a taxonomic suborder of small, pelagic, free-swimming sea snails known as holoplanktonic opisthobranch gastropod mollusks, in the order Pteropoda (also included within the informal group Opisthobranchia).
The adaptations also explain the common name sea angel and the scientific name of the order: From Greek gymnos meaning "naked" and soma meaning "body". The lack of a heavy shell for gymnosomes allows them to hover on the upper water surfaces for longer periods, along with a streamlined body that reduces the drag coefficient.
The insect order Lepidoptera consists of moths and butterflies (43 superfamilies). [1] Most moths are night-flying, while the butterflies (superfamily Papilionoidea ) are the mainly day-flying. Within Lepidoptera as a whole, the groups listed below before Glossata contain a few basal families accounting for less than 200 species; the bulk of ...
Butterfly Symbolism. The butterfly isn't just an elegant emblem in Ree's world. In Greek mythology, psyche (which means "soul" or "butterfly") is often depicted with butterfly wings.
A study found a group of painted lady butterflies traveled 2,600 miles across the Atlantic Ocean without stopping. Experts say it may be a world record for insects.
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.
Clione limacina, known as the naked sea butterfly, sea angel, and common clione, is a sea angel (pelagic sea slug) found from the surface to greater than 500 m (1,600 ft) depth. [ 2 ] [ 3 ] It lives in the Arctic Ocean and cold regions of the North Atlantic Ocean .
Blue Butterflies. It's pretty unusual to spot a blue butterfly, so those who see them flitting around may be excited to catch a glimpse of the cheerful-looking insect.