The species populates mountains in eastern Costa Rica, wildlife researchers say it has a distinctive call

Apr 20, 2015 09:20 GMT  ·  By

A recent paper in the journal Zootaxa announces the discovery of a previously unknown frog species in the forests covering mountains in eastern Costa Rica.

What's seriously bizarre about these newly discovered amphibians is the fact that the skin covering their belly is see-through, making the frogs look like they were made of glass.

That's right, these creatures' internal organs are fully on display, heart, liver and gastrointestinal tract included. Check out the photo below to see for yourselves.

As detailed by Tico Times, the species is now known to the scientific community as Hyalinobatrachium dianae. Apart from it's odd underbelly, there is one other thing that sets it apart.

Thus, wildlife researchers say that these frogs living in Costa Rica's eastern mountains produce calls that are unlike any of the others thus far documented among amphibians.

“Its advertisement call is quite unique. It's different than any other species that has been discovered,” study lead author Brian Kubicki said in a statement.

By the looks of it, the calls produced by this species sound more like noises made by insects. It is believed the frogs use their distinctive calls to attract potential mates.

Hyalinobatrachium dianae specimens measure merely 1 inch (2.5 centimeters) in length as adults. They live high up in trees and, being a perfect lime green, they are almost impossible to spot.

The frogs look like they were made of glass
The frogs look like they were made of glass

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New frog species discovered in Costa Rica
The frogs look like they were made of glass
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