Designed for autonomous exploration, Aqua is a fully amphibious robot that uses an unusual mode of locomotion. On land, it walks on its flippers, and in the water, it uses them to swim. The robot can be programmed to explore watery environments on its own, or even to follow a diver's flippers and act as a kind of assistant. According to the project's website, the unique swimming motion makes Aqua very maneuverable, allowing it to be used around sensitive coral environments. Because it is amphibious, it can be used in very shallow waters where traditional robotic submersibles cannot venture.