The world’s first fluorescent frog has been discovered near Santa Fe in Argentina.

Scientists at the Bernardino Rivadavia Natural Sciences Museum in Buenos Aires made the discovery by accident while studying the pigment of polka-dot tree frogs, a species common across the continent. In normal light the frog appears to have a dull, mottled browny-green skin with red dots, but under UV light it glows a bright fluorescent green.

Fluorescence – the ability to absorb light at short wavelengths and re-emit it at longer wavelengths – is uncommon in creatures that live on land.
The translucent frog was found to use a combination of lymph and glandular emissions to fluoresce.

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