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6.3 Geography of the Seas

Across
In the center of a Atolls is often a pool of shallow, salty water called
Where the sea floor drops away from the continent abruptly
A thick layer of sediment that slopes gently toward deep ocean basins
The continental slope, and the continental rise are sometimes referred to together as the
Any area of the sea that exceeds 6000 meters in depth
A fairly sharp drop-off
Underwater mountain ranges
These great depths are found in the
Down
Circular, coral reef islands that grow around seamounts
Huge valley where the crust appears to be separating
Sandy, gently sloping under water plain
Large underwater fissures
At the base of the continental rise, the ocean floor levels off into the
Underwater volcanic mountains that rise more than 980m above the sea floor