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

Brittle star

Natural environment; Coral reefs

Brittle stars are echinoderms (class Ophiuroidea) which are closely related to sea stars (starfish). They possess radial symmetry with a central body disc from which five highly flexible snake-like ...

Dioecious

Natural environment; Coral reefs

Having separate sexes. Individuals within the species contain only one or the other of male and female reproductive systems.

Proxy signal

Natural environment; Coral reefs

Paleoclimatic evidence that can be used to indirectly infer or estimate some aspect of the paleoenvironment, such as precipitation or temperature. Temperature proxies such as tree ring widths and ice ...