Photo: Sea slug models as an emoji

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Life under the sea can seem so odd to us terrestrial animals. But for creatures like this black margined nudibranch (Doriprismatica atromarginata), with its petticoat frills and graphic elegance – not to mention the apparition of an expressive little face – it's just business as usual. Thank you to photographer John Turnbull who often treats us to the fantastic oddities that the ocean has to offer.

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