A technical cave diver using a diver propulsion vehicle (DPV) to dive into the Blue Springs state park cave system near Marianna, Florida.

Scuba diver on her underwater propulsion vehicle getting a close-up look at an upside-down jellyfish, Bonaire, Caribbean Netherlands.

Scuba diver navigates the waters using a diver propulsion vehicle off the coast of Bonaire, Caribbean Netherlands.

Scuba diver uses a diver propulsion vehicle to navigate the waters off the coast of Bonaire, Caribbean Netherlands.

SpaceX Rocket Launch, United States of America

Small steamship, Bremerhaven, Bremen, Germany

Freediver swims with underwater scooter near a shipwreck, Red Sea, Egypt, Africa

Freediver swimming with underwater scooter, Red Sea, Egypt, Africa

Charging station for electric cars with charging cable, Germany, Europe

Charging plug on electric car, car being charged at charging station, Germany, Europe

Charging plug on electric car, car being charged at charging station, Germany, Europe