Definition, Meaning & Synonyms

reef

noun

/riːf/

Definition

A reef is a submerged ridge of rock or coral that provides a habitat for marine life and can be found in oceans and seas.

Examples

The Great Barrier Reef in Australia is one of the largest coral reef systems in the world.
During our vacation, we explored the colorful fish that lived around the vibrant reef.
Reefs provide essential benefits to marine ecosystems and coastal communities.

Meaning

Reefs are often formed by the accumulation of coral polyps, providing shelter to numerous species of fish and other sea creatures. They also protect coastlines from erosion and can be a popular location for recreational activities such as snorkeling and diving.