♻️ap environmental science review

Marine Ecosystems

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

Marine ecosystems are diverse and interconnected communities of organisms that exist in saltwater environments such as oceans, seas, and estuaries. They include a wide range of habitats like coral reefs, kelp forests, and open ocean zones.