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- DictionaryReef/rēf/
noun
- 1. a ridge of jagged rock, coral, or sand just above or below the surface of the sea.
Oct 19, 2023 · A reef is a ridge of material at or near the surface of the ocean. Reefs can occur naturally. Natural reefs are made of rocks or the skeletons of small animals called corals. Reefs can also be artificial—created by human beings. Artificial Reefs.
1. : to reduce the area of (a sail) by rolling or folding a portion. 2. : to lower or bring inboard (a spar) wholly or partially. intransitive verb. : to reduce a sail by taking in a reef. reefable. ˈrē-fə-bəl. adjective. reef. 3 of 3. noun (2)
Reef definition: a ridge of rocks or sand, often of coral debris, at or near the surface of the water.. See examples of REEF used in a sentence.
A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic (non-living) processes such as deposition of sand or wave erosion planing down rock outcrops.
REEF definition: 1. a line of rocks or sand just above or just below the surface of the sea, often dangerous to…. Learn more.
Oct 19, 2023 · Reefs provide a large fraction of Earth’s biodiversity —they have been called “the rain forests of the seas.” Scientists estimate that 25 percent of all marine species live in and around coral reefs, making them one of the most diverse habitats in the world.
A reef is a raised area on the ocean floor that's made of rock, coral, or sand. If you are a scuba diver, head to a coral reef to check out the diverse marine life. A barrier reef is one that surrounds an island and creates a lagoon between the reef and the beach.
5 days ago · A reef is a long line of rocks or sand, the top of which is just above or just below the surface of the sea.
reef / ˈ riːf/ noun. plural reefs. Britannica Dictionary definition of REEF. [count] : a long line of rocks or coral or a high area of sand near the surface of the water in the ocean — see also barrier reef, coral reef.
May 11, 2024 · Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of coral polyps and other coelenterates. A coral reef may grow into a permanent coral island. Often called ‘rainforests of the sea,’ coral reefs are home to a spectacular variety of organisms.
