Albatross and drone
Imagine a drone that can fly like the Wandering Albatross. The huge bird harnesses power from the wind and sun and glides over the sea. It is extraordinary. And an engineer has designed a robotic glider that can also ride the wind, while surfing the waves like a sailboat. With Patrick Aryee. See all our animations so far: www.bbcworldservice.com/30animals #30animals