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shoal
Sign in to saveAlso known as sandbank, sandbar, gravelbar, bar, sunker
right|thumb|Sandbar between St. Agnes, Isles of Scilly|St Agnes and [[Gugh on the Isles of Scilly, off the coast of Cornwall, England, United Kingdom]] thumb|A tidal sandbar connecting the islands of Waya Island|Waya and Wayasewa of the [[Yasawa Islands, Fiji]] thumb|Sandbar between Nosy Iranja Be and Nosy Iranja Kely(Nosy Iranja, [[Madagascar)]]
~9 min read
Encyclopedic overview
12 sectionsContents
- Description
- Composition
- Formation
- Types
- Sandbars and longshore bars
- Peresyp
- Harbor and river bars
- Nautical navigation
- Geological units
- Human habitation
- See also
- References
right|thumb|Sandbar between St. Agnes, Isles of Scilly|St Agnes and [[Gugh on the Isles of Scilly, off the coast of Cornwall, England, United Kingdom]] thumb|A tidal sandbar connecting the islands of Waya Island|Waya and Wayasewa of the [[Yasawa Islands, Fiji]] thumb|Sandbar between Nosy Iranja Be and Nosy Iranja Kely(Nosy Iranja, [[Madagascar)]]
A shoal is a natural submerged ridge, bank, or bar that consists of, or is covered by, sand or other unconsolidated material, and rises from the bed of a body of water close to the surface or above it, which poses a danger to navigation. Shoals are also known in oceanography, geomorphology, and geoscience, as sandbanks, sandbars, gravelbars, or bars. Two or more shoals that are either separated by shared troughs or interconnected by past or present sedimentary and hydrographic processes are referred to as a shoal complex.
Excerpted from Wikipedia’s “shoal” article, available under the CC BY-SA 4.0 licence.