Photo of the Day ~ Sea Pens - Mission Blue

February 19, 2013

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Soft corals known as sea pens, usually found at depth, and a blue cod appear in the shallow waters of New Zealand's Long Sound reserve, where tannin-stained water blocks light. When disturbed, sea pens emit a greenish light and can deflate, retreating into their bulbous feet.

Photograph by Brian Skerry, National Geographic

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