KEY CONCEPT Marine ecosystems are global.

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Presentation transcript:

KEY CONCEPT Marine ecosystems are global.

The ocean can be divided into zones. Ocean zones can be determined by their distance from shoreline and water depths. intertidal zone—between low and high tide neritic zone—from intertidal zone to continental shelf bathyal zone—from neritic zone to base of continental shelf abyssal zone –lies below 2000 m intertidal zone neritic zone bathmat zone abyssal zone

The neritic zone harbors more biomass than any other zone. Plankton make up most of the biomass. zooplankton phytoplankton

Coastal waters contain unique habitats. Coral reefs are found in warm waters. tropical climate zone great amount of biomass

Kelp forests are found in cold, nutrient-rich waters. large communities of seaweed great amount of biomass