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

Add a new term

Contributors in Coral reefs

Become a Contributors

Coral reefs

Pharyngeal arch

Natural environment; Coral reefs

One of several columns of mesenchyme found in the neck region of the developing vertebrate embryo. In lower vertebrates, blood vessels formed here become part of the gills; in higher vertebrates ...

Active search

Natural environment; Coral reefs

Search behaviour in which a herbivore or predator moves around its environment looking for food.

Field guide

Natural environment; Coral reefs

A pocket-size book or a CD containing taxonomic keys for identification, illustrations and/or photographs of organisms, distribution maps, and some natural history notes.

Acoustic tag

Natural environment; Coral reefs

A sound transmittor attached to an aquatic animal to track its movements.

Balanced polymorphism

Natural environment; Coral reefs

A type of polymorphism in which the frequencies of the coexisting forms do not change noticeably over many generations.

An extracellular material that forms the outer surface of plant, fungus, and certain bacterial cells. It is external to the cell membrane and serves in a structural and supporting role. The cell wall ...