Examples of marine biomes include oceans the coral reefs within and estuaries.
A marine biome is an aquatic biome that contains salt water rather than freshwater.
Here is an image of fish feeding on a coral reef. Many fish rely on coral reefs for food.
For more information from a reliable source you can check out the University of California Museum of Paleontology page on this topic: http://www.ucmp.berkeley.edu/glossary/gloss5/biome/aquatic.html.
