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Eggs of a Red-eyed Treefrog
Agalychnis callidryas


Barro Colorodo Island, Panama




This is a photo of tiny frog embryos that are visible inside a clutch of red-eyed treefrog eggs that stick to a leaf overhanging a little pond. The embryos can hatch prematurely when a predator attacks and they can propel themselves into the safety of a pond below.

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Christian Ziegler
Tropical biologist turned photojournalist for Max-Planck for Animal Behavior and NatGeo.
Learn more about Christian Ziegler.

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