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Janthina janthina is a species of holoplanktonic sea snail, a marine gastropod mollusk in the family Epitoniidae. Its common names include violet sea-snail , common violet snail , large violet snail and purple storm snail .
Adult snails may not be capable of swimming, and die when they are detached from their rafts; Janthina janthina larvae, however, actively swim in the water column. [ 3 ] The adult snails prey upon (and live near to) one of several species of pelagic animals loosely known as jellyfish.
Janthina globosa, commonly referred to as the violet snail, is a neustonic organism characterized by its thin, fragile purple shell and large size The maximum recorded shell length is 38.5 mm. [2] Females normally grow to larger sizes than males, making it easy to distinguish between the sexes.
Janthinoidea Janthina janthina sea snail with its bubble raft, washed up on the east shore of the island of Maui: Scientific classification; Domain: Eukaryota: Kingdom: Animalia
Janthina striata Montrouzier, 1860 Janthina vinsoni Deshayes , 1863 Janthina exigua , also known as the dwarf janthina , is a species of small holoplanktonic sea snail , a marine gastropod mollusk in the family Epitoniidae , the violet snails or purple storm snails.
Such predators include nudibranchs (sea slugs) in the genus Glaucus [4] and purple snails in the genus Janthina. [5] Each apparent individual is a hydroid colony, and most are less than about 7 cm long.
Janthina rosea Anton, 1839 Janthina striolata Adams & Reeve , 1848 Janthina pallida , also known as the pale janthina , is a species of holoplanktonic sea snail , a marine gastropod mollusk in the family Epitoniidae , the violet snails or purple storm snails.
Janthina globosa Blainville, 1825 Janthina megastoma Adams , 1861 Janthina umbilicata , also known as the elongate janthina , is a species of holoplanktonic sea snail , a marine gastropod mollusk in the family Epitoniidae , the violet snails or purple storm snails.