A turtle relaxes on the sand on the north shore of O'ahu in Hawai'i.

After nibbling on the reef algae, a turtle makes its way to the surface accompanied by remoras. Their commensalist relationship allows for these peculiar fish to hitch a ride on the turtle's shell via a sucker-like organ, derived from a modified dorsal fin.

Red fronted lemur (Eulemur rufifrons) in Ranomafana National Park in eastern Madagascar.

Spotting one of the many ring-tailed lemurs up a tree in Isalo National Park in western Madagascar.

A group of elephants comes to drink at a watering hole at dusk. On the Legodimo Nature Reserve in Botswana.

Mountain goats above enjoying the foliage.

Donkeys used for transporting goods up and down the villages plying the route around Mt. Manaslu.