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

radial canal

Natural environment; Coral reefs

A part of the water vascular system of echinoderms. Specifically, a branch off of the ring canal that leads to an arm (ray) and gives rise to the tube feet. In hydrozoan medusae, the radial canal is ...

holothurin

Natural environment; Coral reefs

A toxic substance released by some holothuroids (sea cucumbers).

bipinnaria larva

Natural environment; Coral reefs

An early starfish larva with ciliated bands running about the periphery.

hemichordate

Natural environment; Coral reefs

Any of various worm-like marine animals belonging to the phylum Hemichordata, having a primitive notochord and gill slits.

ecosystem based management (EBM)

Natural environment; Coral reefs

EBM integrates knowledge of ecological interrelationships to manage impacts within an ecosystem. Effective implementation of EBM should: (1) consider ecological processes that operate both inside and ...

esca

Natural environment; Coral reefs

In some fishes, e.g. Frogfishes, the first dorsal fin ray is modified to function as a fishing pole and lure. The part close to the body is the illicium or fishing pole. The esca is the lure on the ...