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Oceanography Vocab.

TermDefinition
Continental Margin
Continental Shelf The gently sloping section of the continental margin located between the shoreline and the continental shelf.
Continental Slope The steeply inclined section of the continental margin located between the continental rise and the continental shelf.
Continental Rise The gently sloping section of the continental margin located between the continental slope and the abyssal plain.
Abyssal Plain A large, flat, almost level area of the deep-ocean basin.
Mid-ocean Ridge A long, undersea mountain chain that forms along the floor of the major oceans.
Rift Valley A long, narrow valley that forms as tectonic plates separate.
Seamount A submerged mountain on the ocean floor that is at least 1,000 meters high and that has a volcanic origin.
Ocean Trench A steep, long depression in the deep-sea floor that runs parallel to a chain of volcanic islands or a continental margin.
Plankton The mass of mostly microscopic organisms that float or drift freely in freshwater and marine environments.
Nekton All organisms that swim actively in open water, independent of currents.
Benthos The organisms that live at the bottom of the sea or ocean.
Benthic Environment The region near the bottom of a pond, lake, or ocean.
Pelagic Environment In the ocean, the zone near the surface and middle depths. It is beyond the sublittoral zone and above the abyssal zone.
Intertidal Zone The shallowest zone, located between the low-tide and high tide limits.
Sublittoral Zone The sublittoral zone begins where the intertidal zone ends, at the low tide limit.
Bathyal Zone
Abyssal Zone
Hadal Zone
Holdfasts
Created by: JoJoJoH
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