Reefs
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A shallow elevation composed of consolidated material that may constitute a hazard to surface navigation. (AGROVOC)
Narrower Topics
Coral Reefs
A tract of corals growing on a massive, wave-resistant structure and associated sediments, substantially built by skeletons of successive generations of corals and other calcareous reef-biota.
Coral Reefs
A tract of corals growing on a massive, wave-resistant structure and associated sediments, substantially built by skeletons of successive generations of corals and other calcareous reef-biota.
