Local guide Sukaibin Sumail (right) studies the way ahead to a previously unexplored ridge on Mt Kinabalu, with biologists Rachel Schwallier and Merlijn Jocqué in tow.
Local guide Sukaibin Sumail (right) points the way through the cloud forest up a mountain ridge that has never been explored by biologists before. Above 2000 meters, Kinabalu is almost always shrouded in mist.
The hole-in-the-head frog (Huia cavitympanum) is the only amphibian in the world known to make purely ultrasonic calls. This adaptation is thought to help it communicate against the loud background noise of the rapids it breeds in.
