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.MolluscaBase (2019). MolluscaBase. Janthina exigua Lamarck, 1816. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=140154 on 2019-10-09
Distribution This species is pelagic, and occurs around the world in tropical waters, in other words it is circumequatorial.
It has been recorded from: The Atlantic Ocean British Isles European waters Madagascar Mascarene Plateau Mediterranean Sea Mozambique The Pacific Ocean South Africa The West Coast of Ireland
Description The maximum recorded shell length is 15.3 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Habitat Minimum recorded depth is 0 m. Maximum recorded depth is 0 m.
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