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blue button jelly

the blue button jelly (Porpita porpita) forms part of the "blue fleet", a huge drifting community of organisms which includes the infamous bluebottle. the blue colour apparently provides protection against uv light and, i imagine it also provides quite an effective camoflage against predators hovering above.

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Uploaded on February 21, 2007
Taken on February 15, 2007