Many frogs glow in blue light, and it may be a secret, eerie language
Twilight conditions may let the frogs' skin emit colors that can be easily seen by other frogs
![A photo of a small green Sarayacu tree frog sitting on a green background.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/08/080223_jb_biofluorescent_frogs_feat.jpg?fit=1030%2C580&ssl=1)
The Sarayacu treefrog (Dendropsophus parviceps) is one of 151 frog species recently determined to fluoresce under the blue hues of twilight.
Santiago Ron