Europa, which is one of Jupiter's moons.
the ocean-bottom
gas
I believe that is the crust.
the tectonic plates under the earths surface
tsunami
Europa possibly, has a liquid ocean under the surface ice.
europa
tsunami
The wreck of Titanic is now 12,600 feet under the surface of the North Atlantic Ocean.
It is the surface of the earth, except it is under water instead of under air.
Europa, a moon of Jupiter, is believed to have a frozen ocean beneath its icy surface. This ocean is thought to be in contact with a rocky seafloor, potentially providing conditions suitable for life to exist.
Because it is under the ocean.