Masoala National Park is one of the largest in Madagascar but one of the least visited as it is very remote. Primary rainforest covers a range of mountains and drops down to the deserted beaches of Antongil Bay where hump-backed whales come to breed and calve. The Masoala rainforest is beautiful with tall pallisander trees, vines, wild ginger plants, ferns and orchids. Walking in the forest you see hundreds of frogs, including the large tomato frog. Chameleons are easily found: the most commonly-seen species include the panther chameleon, hooded chameleon and several species of stump-tailed chameleon. Masoala is the last refuge of the red-ruffed lemur which sun themselves on the tops of trees in the morning.