Glaucus Atlanticus Pins and Buttons
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Description: This pretty nudibranch packs quite a sting! Derivative work based on photograph by Taro Taylor from Sydney, Australia. CC-BY-2.0: "This Glaucus atlanticus was washed up on Surfers Paradise Beach in Queensland Australia. It is about 35 mm in length. The species swims upside-down and is accordingly countershaded for that position." (Wikipedia)
