The bottom or
surface of the sea bed is constantly changing due to under water currents shifting and moving the sand around.
Not exact matches
Coastal habitats, including mangrove forests and
sea grass
beds, cover only a small fraction
of the world's
surface, but these fringe ecosystems harbor an enormous amount
of carbon.
If the ocean was same temperature
surface to
sea bed it would be impossible to raise temperature
of the lower part from above without raising the temperature
of the upper part, but it ain't, so it is.