basalt
basalt is the common rock
The floor of heavier rock under the oceans is primarily composed of basalt. Basalt forms from volcanic activity and makes up the majority of the oceanic crust.
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Earth's crust is composed of the continents and the ocean floor.
sea floor spreading
While there are more than four oceans on Earth, there are four which are considered the main ones. The four main oceans are the Pacific, Atlantic, Indian, and Arctic.
halite
Subduction.
Pressure increases as you approach the ocean floor.
pacific ocean Atlantic oceans
puffer fish blend in with the oceans floor
The Arctic Ocean is the smallest of the Worlds Oceans.