Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Lead line

Natural environment; Coral reefs

A line with a lead weight on the end used to measure depth. The lead is dropped into the water and marks on the line are read to determine the current water depth. The lead usually has a cavity to ...

Nonvascular plant

Natural environment; Coral reefs

A plant which lacks tissues to conduct water and nutrients. Nonvascular plants do not produce flowers or seeds.

Buffer

Natural environment; Coral reefs

A solution or liquid whose chemical makeup neutralises acids or bases without a great change in ph.

Enterocoelous

Natural environment; Coral reefs

The mesoderm and coelom initially develop as pouches off of the primitive digestive tract (archenteron) of an embryo. Enterocoelous development of the coelom occurs in deuterostomes.

Anal fin

Natural environment; Coral reefs

The single fin situated on the ventral midline of a fish, behind the anus, and anterior to the caudal fin.

Runoff

Natural environment; Coral reefs

Water that has been on land and moves seaward as a result of rain, flooding, irrigation or flushing . Runoff is frequently high in nutrients and suspended sediments, as well as toxicants.