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Blue Glaucus ~ Glaucus atlanticus ~ Also known as the blue dragon, sea swallow or blue angel, the blue glaucus is a species of brightly colored sea slug (nudibranch), and can be found throughout the Atlantic, Pacific and Indian Oceans in temperate and tropical waters. Like most nudibranchs, this species incorporates toxic chemicals or stinging cells from its prey into its own skin. This ability provides the blue glaucus with a defense mechanism against predation. ( from https://oceana.org/marine-life/corals-and-other-invertebrates/blue-glaucus )
I was on Fish Hoek beach after a very fierce south easter wind - known locally as the Cape Docter, when I noticed these mostly blue and white animals in the surf rolling across the beach. Blue glaucuses eat large, venomous prey, such as the Portuguese man o' war and the blue button jelly, and store their prey's stinging cells in their bodies to later use against predators. ( copied from web) The Portuguese man o' war can be seen where it is blown out on the beach. Also the small crab and snail, no idea what it was ~ thru all had the purple-blue of the P Man OW. First and only time we have seen these critters. He is the last image and you see he looks like the helmet worn in the 1400's up. D3S and 70-200 f/2.8
I was on Fish Hoek beach after a very fierce south easter wind - known locally as the Cape Docter, when I noticed these mostly blue and white animals in the surf rolling across the beach. Blue glaucuses eat large, venomous prey, such as the Portuguese man o' war and the blue button jelly, and store their prey's stinging cells in their bodies to later use against predators. ( copied from web) The Portuguese man o' war can be seen where it is blown out on the beach. Also the small crab and snail, no idea what it was ~ thru all had the purple-blue of the P Man OW. First and only time we have seen these critters. He is the last image and you see he looks like the helmet worn in the 1400's up. D3S and 70-200 f/2.8
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