Brave Wilderness: Incredible “Invisible” Glass Frog Observed in Costa Rica

Glass frogs are associated with streams and rivers, so the hunt for the Glass Frog was carried out near small stream banks while watching out for the Fer-de-Lance (extremely poisonous snake).

The glass frogs (or glassfrogs) are frogs of the amphibian family Centrolenidae (order Anura). Most glass frogs is primarily lime green, the abdominal skin of some members of this family is transparent. The internal viscera, including the heart, liver, and gastrointestinal tract, are visible through the skin, giving the appearance that the ventral skin is made of glass.

The glass frogs were explored by observed by Coyote Peterson (Brave Wilderness) and Brian Kubicki, Amphibian Specialist, at the Costa Rican Amphibian Research Center in the Guayacán Rainforest Reserve east central Costa Rica.




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