Global Water
The top layer of the ocean, known as the epipelagic zone, typically extends to a depth of around 200 meters. This zone is well-lit and is where most marine life resides due to the availability of sunlight for photosynthesis. Beyond this depth is the mesopelagic zone, which extends from 200 to 1000 meters deep.
The layer below the continents and the ocean floor is the Earth's mantle. It is a solid layer of rock that extends about 1,800 miles (2,900 kilometers) beneath the Earth's surface. The mantle is responsible for the movement of tectonic plates and drives processes like earthquakes and volcanic eruptions.
A basic answer is that the densest ocean water is the saltiest - a ship floats higher in salt water (sea) than in fresh water (lake). Also cold water tends to sink towards the ocean floor, or may form a layer mid way.
The Continental Shelf ; see related link below .
The Blue Shark typically inhabits the epipelagic zone, which is the uppermost layer of the ocean where there is sufficient light for photosynthesis. This zone extends from the surface to around 200 meters deep.
The ocean is at sea level.
The third layer of the ocean is the Bathypelagic Zone. This is also called the dark zone. There is no sunlight in this zone, and it extends from 1,000 meters to about 4,000 meters in depth. The pressure is extremely high in this zone.
The Moho , short for Mohorovicic discontinuity , is about 7 kilometers below the floor of the ocean and the MANTLE is the layer immediately beneath the Moho !
coast of iceland :/ its right i promise
The continent of Europe extends from the Atlantic Ocean to Asia.
stratified layer
The largest mountain in terms of volume is Mauna Loa in Hawaii, USA. It has an elevation of 4,169m (13,679 ft.) above sea level, but extends much more below the ocean.