National Geographic Society

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An adult reticulated glass frog (Hyalinobatrachium valerioi).  Its named for its transparent skin.  Get close enough and you can see his organs hard at work.

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Whether searching for prey in the tropical canopy or stalking a meal over a spongy moss carpet, forest predators rely on “stealth-like” skills to survive. Natural instincts kick in right from birth, and in one never-before-seen case, even before birth. For the first time captured on camera, watch glass frog embryos hatch early to escape a little-known but lethal wasp, while their father fiercely defends the babies with his martial arts moves.