Topic
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plateau
5
reef
5
reefs
5
ridge
5
ridges
5
rise
5
scarp
5
seachannel
5
seafloor topography
5
seamount
5
seamount chain
5
seamounts
5
shelf
5
shelf valley
5
shoal
5
shoals
5
slope
5
spur
5
submarine canyons
5
tablemount
5
terrace
5
trench
5
trenches
5
trough
5
undersea feature
5
valley
5
water depth
5