Last time we saw a Seabreacher, it was decidedly more, erm, dolphin-y. Now the company behind it all, Innespace, is back with the Seabreacher X, a high-speed sub that zips below the waves and soars above them.

A 260 horsepower engine pushes the Seabreacher X through the water at 50 miles per hour on the surface and 25 mph when it's diving. That means it has enough speed that it can jump a whopping 12 feet into the air when it gets going. Those aren't the only big numbers here: they cost upwards of $100,000.

Check out more of this shark-sub in the gallery below.

Seabreacher, via Toxel and DailyMail