Page 33 - Science Course 3 (Book 1)

Mo1-L3b: What are the Types of Aquatic Ecosystems?

Ocean : Coastal Oceans Most coral reefs form in shallow tropical oceans and
protect coastlines from storm damage and erosion.
Coastal oceans include several types of ecosystems,
including continental shelves and intertidal zones.

The intertidal zone is the ocean shore between the
lowest low tide and the highest high tide.

Nutrients washed in from rivers and streams
contribute to high biodiversity.

Coral reefs provide food and shelter for many
animals, including shrimp, crabs, scallops, and clams.

Intertidal species, like crabs, fish, and mussels, have
adaptations for surviving exposure to air during low
tides and to heavy waves during high tides. SUMMARY

What are the Types of Aquatic Ecosystems?
Ocean : Coral Reefs Wetlands can be saltwater ecosystems or

A coral reef is an underwater structure made from freshwater ecosystems.
outside skeletons of tiny, soft-bodied animals called
coral.

Coral reefs and coastal ecosystems have
high levels of biodiversity.

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