The size of a human fingernail, this tiny glass frog in Costa Rica is a wonder to watch. In this clip from the Discovery Channel’s Speed of Life, you can see the glass frog’s rice grain-sized, red heart and internal organs through its translucent belly skin.
Costa Rica has 13 species of glass frogs, and there are more than 100 species across Central and South America. However, because they are small, arboreal, nocturnal, and can live in extreme, wet areas, they can be hard to spot. Luckily, we have the internet:
Via National Geographic, this is Ecuador’s Hyalinobatrachium pellucidum glass frog.
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