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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]
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 ...
The rare blue dragon sea slug, which is now washing up on Texas coasts, has a severely painful sting.
Don't let the beautiful color of the glaucus atlanticus, also known as the "blue dragon," fool you -- its sting is to be feared. Rare sighting of mesmerizing but threatening sea creature Skip to ...
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Add to the list a slew of Glaucus Atlanticus, also known as the blue dragon or blue sea slug. A woman discovered some of the species on a walk along Fish Hoek Beach near Cape Town in South Africa ...
Sea slugs have an enormous variation in body shape, color, and size. Most are partially translucent. The often bright colors of reef-dwelling species imply that these animals are under constant threat of predators. Still, the color can warn other animals of the sea slug's toxic stinging cells (nematocysts) or offensive taste.