Approximately 50 new species were discovered in Papua New Guinea during a 2008 Conservation International expedition. This tree frog species of the Nyctimystes genus is one of them. They exhibit a unique adaptation to their environment in the clear mountain river. The female frogs lay their eggs underneath river stones, and when the tadpoles hatch, they have mouths that can suction onto the river’s slippery rocks. To read more about these new species, visit National Geographic.