Singapore deploys the NUSwan!

“The NUSwan units are each fitted with GPS navigation features so each bird in the robo-flock can efficiently monitor its correct patch on the water and keep track of where it’s already taken samples. When their power runs low, the swans are programmed to paddle back to base for a recharge.

They’re capable of being remotely controlled by human operators, but are designed to act autonomously wherever possible. The units are capable of measuring pH, chlorophyll, dissolved oxygen, and turbidity levels in the water, wirelessly uploading data to the cloud as they go.”