The horizontal upper surface of a coral reef.
- A rich reef community proliferated across the reef flat and down the wall, where hard corals formed small terraces and ledges where yet more corals and sponges grew.
- They are usually characterized by an outer reef edge capped by an algal ridge, a broad reef flat, and a sand-floored ‘boat channel’ close to the shore.
- Unlike other scarid species, they often move onto the reef flat at high tide to feed and therefore may be seen in tidal pools.
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