1) Sea 
The Hydrospace is the world`s first stand-up four-stroke jet ski, or personal watercraft. It was introduced in October 2005 by Hydrospace. In 2007, Hydrospace changed their name to HSR-Benelli following the acquisition of Benelli Motori (related to, but unaffiliated with Benelli shotguns or Benelli motorcycles). The company originated in Pöchlar....
regions beneath the oceans' surface
hydrospace The regions beneath the ocean's surface, especially when considered as an area to be studied.