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Breaking swell waves at Hermosa Beach, California. A swell, also sometimes referred to as ground swell, in the context of an ocean, sea or lake, is a series of mechanical waves that propagate along the interface between water and air under the predominating influence of gravity, and thus are often referred to as surface gravity waves.
Set waves: A group of waves of larger size within a swell; Shoulder: The unbroken part of a breaking wave; Surf's up: A phrase used when there are waves worth surfing [2] Swell: A series of waves that have traveled from their source in a distant storm, and that will start to break once the swell reaches shallow enough water
[3] [4] Protected from rip currents, spring tides, or ocean swell, a roadstead can be open or natural, usually estuary-based, or may be created artificially. [5] In maritime law, it is described as a "known general station for ships, notoriously used as such, and distinguished by the name". [6]
However, the word "sea" can also be used for many specific, much smaller bodies of seawater, such as the North Sea or the Red Sea. There is no sharp distinction between seas and oceans, though generally seas are smaller, and are often partly (as marginal seas or particularly as a mediterranean sea) or wholly (as inland seas) enclosed by land. [2]
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.
When waves travel into areas of shallow water, they begin to be affected by the ocean bottom. [1] The free orbital motion of the water is disrupted, and water particles in orbital motion no longer return to their original position. As the water becomes shallower, the swell becomes higher and steeper, ultimately assuming the familiar sharp ...
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Surfing a break in Oahu. A surf break (also break, shore break, or big wave break [1]) is a permanent (or semi-permanent) obstruction such as a coral reef, rock, shoal, or headland that causes a wave to break, [2] forming a barreling wave or other wave that can be surfed, before it eventually collapses.