Drones are made to just fly in the air, there are also others that are made to swim.

The Port of Rotterdam debuted their aquatic drones at the World Port Days conference. The first water drone, AquasmartXL, is planned to travel across the Port of Rotterdam and is equipped with a camera to send real time images for surveillance and inspection of infrastructure.

Another drone called the Waste Shark is used to remove up to 500 kilos of waste from the water, which is then processed. The Waste Shark, developed by RanMarine, will be used to clean up the Rotterdam docks. It has an open mouth that is located 35 centimeters below the water surface, which is used to take in more than a thousand pound of waste in the water. It can also gather data about water quality. For 6 months tests will be run using 4 Waste Sharks.