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I saw the coolest animal at Hanauma Bay this morning! A clumpy nudibranch! It was huge, about the size of the palm of my hand. I've never seen a nudibranch that big before, normally the ones I find are about an inch long and very colorful. This one had yellow bumps on its body with a pinkish margin.

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Hanauma Bay

Nudibranch literally means "naked gills", an appropriate name for them since their feathery gills are exposed on their backs. In this photo you can see it sticking up its two sensory tentacles in the front, called rhinophores.

Hanauma Bay
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