Glaucus atlanticus
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Glaucus atlanticus is a species of sea slug in the family Glaucidae.
Glaucus atlanticus 1 cropped
Glaucus atlanticus is the blue sea slug shown here out of water on a beach, and thus collapsed; however, touching the animal directly with one's skin can result in a painful sting, with symptoms similar to those caused by the Portuguese man o' war.
The slug in the water
Portuguese man o' war
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The Portuguese man o' war, also known as the man-of-war, bluebottle, or sometimes called Caravela Portuguesa, is a marine hydrozoan found in the Atlantic, Indian, and Pacific oceans. While it is typic
Glaucus atlanticus
…shining through the ocean's surface when viewed from below the surface of the water. 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…
Portuguese Man O War
Washed ashore on a beach in Boca Raton, Florida
The violet sea snail, which uses a raft of bubbles, as shown here, to float at the ocean surface, feeds on men o' war.
Man-of-war fish