♻️ap environmental science review

Coral Reefs

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Coral reefs are diverse underwater ecosystems formed by colonies of tiny animals called coral polyps. They thrive in warm, shallow waters with clear sunlight and provide habitat for numerous marine species.