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Blue IcebergChinstrap penguins (Pygoscelis antarctica) ride out high surf on blue-ice icebergs near Candlemas Island in the South Sandwich Islands. Safe for the moment from predaceous leopard seals, chinstrap penguins are the second most abundant species in Antarctica and the sub-Antarctic.

Photograph by Maria Stenzel

Extreme Earth

Extreme Earth pictures, extreme Earth photos, photo gallery, picture gallery, from National Geographic.

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