Becuase of the time and money it takes to go down in a submarine, look around, run test's and come back up again. they will have investigated perhaps only a square Kilometer. then repressurise and come back up when the air runs out... this all takes Hours and lots of money... also some depths are just beyond our technology. Ocean cover three quaters of the planet its long hard work. also almost all the species of marine life move...
Because it is too big to explore all of it. The ocean is like half of the world and the whole world hasn't been exploreed yet.
the artic
no you stupid person
The ocean and the underground. Humans have not completely explored them yet.
The deepest parts of the ocean, known as the hadal zone, are the least explored areas on the planet. These include areas such as the Mariana Trench, the deepest part of the ocean, which has only been reached by a handful of manned submersible missions. The extreme depths, pressure, and darkness make it a challenging environment to explore fully.
While there aren't really any parts of the world that have yet to be discovered, there are lots of parts of the world that are yet to be fully explored. The bottom of the ocean and many rain forests for example, have yet to be fully explored.
The abyss is the deepest part of the ocean that has not been explored. There is a movie that was made about it in the eighties I think.
The Pacific Ocean
in 1968
Challenger deep is in the ocean, it was never explored by spacecraft.
No, all land on Earth has been explored. However not all areas of the Ocean have been explored because we are not advanced enough in technology to go as deep as the Ocean floor is in some parts of the Ocean.
The Ross ice Shelf is a floating ice shelf connected to the Antarctic continent, that is about the size of France. The ocean under the shelf has never been explored.
It has never been explored by humans and never will.