A relatively new kind of marine species is called "Seabreacher".
These watercraft vessels started appearing from 1997 and have been evolving at a rapid pace. Seabreachers enable their controllers to maneuver swiftly through the water: diving, jumping, rolling, porpoising... all within the safety and comfort of a dry, sealed cockpit.
The average copy is capable of reaching 40 mph / 60 kmh on the surface, and up to 20 mph / 40 kmh under water. But the rare Seabreacher X model is capable of 50 mph / 80 kmh on the surface and up to 25 mph / 40 kmh under water! They have been designed to operarate in salt water as well as fresh water.
Unlike their organic ancestors that can dive as deep as 990 feet / 300 meters, they are capable of diving 5 feet under water for recreational purposes only. And where sharks and dolphins survive on a variety of fish, the elegant Seabreacher runs on gasoline. It is because of these characteristics that Seabreachers must be classified as objects of 'biomimic marketing'.
Imagery via Innespace