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1. That part of the ocean lying more than a few hundred nautical mile s from shore, and thus beyond the outer boundary of green water. 2. More generally, the open ocean or deep sea. blue-water navy 1. A navy capable of sustained operations in the open ocean, beyond a few hundred nautical miles from shore. 2.
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1. Living in the open ocean rather than coastal or inland waters (e.g. a pelagic shark). 2. Taking place in the open ocean (e.g. pelagic fishing, pelagic sealing). pelican hook. Also called a slip-hook or Davey hook. A hook with a hinge in the curve of the hook, normally held closed by a metal ring that keeps the two hinged parts together.
In Scotland and parts of England, a headland or cape, or another name for a cuspate foreland; or a spur of a mountain ridge. [4] nodal region A region characterized by a set of places connected to another place by lines of communication or movement. [5] North Geographic Pole. Also called the Geographic North Pole, Geographic North, or simply ...
2. The study and depiction of the physical features or relief of the floor of a lake or ocean. In this sense bathymetry is considered the underwater equivalent of hypsometry or topography. bay A coastal body of water that is directly connected to but recessed from a larger body of water, such as an ocean, sea, lake, or another bay.
Ocean – the four to seven largest named bodies of water in the World Ocean, all of which have "Ocean" in the name (see: Borders of the oceans for details). Sea has several definitions: [a] A division of an ocean, delineated by landforms, [6] currents (e.g., Sargasso Sea), or specific latitude or longitude boundaries. This includes but is not ...
Deep ocean currents are driven by density gradients in water due to temperature (thermo) and salinity (haline) differences. This thermohaline circulation, occurs at both deep and shallow ocean levels and moves much slower than tidal or surface currents. Upwelling and downwelling areas in the oceans are areas where significant vertical currents ...