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G. atlanticus feeds on other pelagic creatures, including the Portuguese man o' war and other venomous siphonophores. This sea slug stores stinging nematocysts from the siphonophores within its own tissues as defence against predators. Humans handling the slug may receive a very painful and potentially dangerous sting.
Glaucus atlanticus is a blue pelagic aeolid nudibranch. Individuals in this species can be dangerous for humans to handle; the cnidosacs of G. atlanticus often contain particularly powerful venomous stinging cells from one of its food species: the pelagic siphonophore known as the Portuguese Man o' War, Physalia physalis. [3]
The rare blue dragon sea slug, which is now washing up on Texas coasts, has a severely painful sting.
In the North Pacific are Glaucus marginatus, Glaucus thompsoni and Glaucus mcfarlanei, with Glaucus marginatus also occurring in the Indian Ocean and the South Pacific. Also in the South Pacific is Glaucus bennettae. [4] [11] Glaucus atlanticus has some genetic differences in different parts of its range but is considered to be a single species ...
Don't let the beautiful color of the glaucus atlanticus, also known as the "blue dragon," fool you -- its sting is to be feared. Don't let the beautiful color of the glaucus atlanticus, also known ...
Don't let the beautiful color of the glaucus atlanticus, also known as the "blue dragon," fool you -- its sting is to be feared. Don't let the beautiful color of the glaucus atlanticus, also known ...
This is because it is a passive drifter, which means that it relies on water currents and wind to carry it through the ocean. It is preyed on by the sea slug Glaucus atlanticus (sea swallow or blue dragon), violet sea-snails of the genus Janthina, [12] and the other blue dragon, Glaucus marginatus. [13]
The regional form previously known as P. utriculus has a bladder rarely exceeding 10 centimetres (4 in) in length and has one long hunting tentacle that is less than 3 metres (10 ft) long. In comparison, the typical man o' war has a float of around 15 to 30 centimetres (5.9 to 12 in), and several hunting tentacles that can reach 30 metres (100 ...