David Perpinan / Pair of Mediterranean tree frogs (Hyla meridionalis) in amplexus, Barcelona, Spain, May. Filmed at night with an infrared camera.

Andres M. Dominguez / Tree frog (Hyla meridionalis) near a lake in Sierra de Grazalema Natural park, southern Spain, April.

Andres M. Dominguez / Tree frog (Hyla meridionalis), Cadiz, Andalusia, Spain, March.

Andres M. Dominguez / Tree frog (Hyla meridionalis) in water with Bacteria (Leptothryx discophora) causing iridescent sheen on water surface, and Portuguese oak leaf (Quercus faginea). Sierra de Grazalema Natural Park, so...

Andres M. Dominguez / Tree frogs (Hyla meridionalis) two on plant by misty lake, Prado del Rey, southern Spain, February.

Pascal Pittorino / Mediterranean tree frog (Hyla meridionalis) tadpole underwater, Toulon, Var, Provence, France, June.

Pascal Pittorino / Mediterranean tree frog (Hyla meridionalis) on a branch of flowering Plum tree (Prunus domestica) in the rain, Var, Provence, France, March.

Pascal Pittorino / Young Mediterranean tree Frog (Hyla meridionalis) resting on a leaf of Yucca (Yucca filamentosa) in the rain, Var, Provence, France, July.

Pascal Pittorino / Mediterranean tree Frogs (Hyla meridionalis) tadpoles underwater, Toulon, Var, Provence, France, June

Pascal Pittorino / Mediterranean tree frog (Hyla meridionalis) juvenile, on a human finger, Var, Provence, France, June.

Jean E. Roche / Mediterranean tree frogs (Hyla meridionalis) in amplexus, Camargue, France, June.

Roger Powell / Stripeless / Mediterranean Tree Frog (Hyla meridionalis) Extremadura, Spain