I recently went on a night walk in the rainforest of Costa Rica’s Osa Peninsula, looking for frogs, snakes, and other nocturnal animals with a great wildlife guide who knew the area well. Although we didn’t see any mammals or the famous deadly Bothrops asper viper known as the “terciopelo” in Spanish (velvet) and “fer-de-lance” in French (spearhead). We did, however, see numerous frog species and at least two snake species, although we could only identify the six or seven Cat-eyed Snakes we saw.
There were also some basilisk lizards getting bit by mosquitoes, a large spider similar to a tarantula, a dragonfly larva in the water, and plenty of frog eggs. At one point we turned off all our flashlights to try to find a glass frog (pictured below) and noticed some bioluminescent mushrooms, which were impossible to photograph in the dark and look pretty dull in the light. Although I’ve forgotten the names of the various frog species featured in the slideshow of the photos I was able to take below, I hope you enjoy the shots! It’s a little tough to get good photos at night with such high contrasts between the dark background and an object lit with a powerful flashlight, but with luck and many attempts I was able to get some decent ones to share here.