Show:
Ocean
Coral Reefs
Beaches
Estuaries
Lakes & Rivers
100
This is the layer of water where the most life exists because it has plenty of light.
the Sunlit/euphotic zone
100
Coral use this to get food.
Algae
100
This is tolerant to both wind and salt, and helps stabilize dune systems (which are examples of ecological succession).
Dune grass.
100
This is an area where fresh water flows into the ocean.
estuary
100
This is a smaller stream or river that flows into a larger stream or river.
tributary
200
These are plants and animals that move with ocean currents.
Plankton
200
Coral undergo this process to get rid of algae that are no longer helpful and attempt to acquire new algae that will make the coral healthy again.
Coral Bleaching
200
This area of a beach is covered by high tide and uncovered at low tide.
inter-tidal zone
200
This is the largest watershed in the world.
The Amazon River
200
This is a lake that is too shallow to have an aphotic zone.
Pond
300
These are animals that freely move throughout the ocean.
Nekton
300
This is a coral reef that is formed around a sunken volcano.
An Atoll
300
These areas where water comes in during high tide and then remains filled when the tide goes out are common in rocky beaches.
Tide Pools
300
Water from this river mixes with the Gulf of Mexico quite slowly, lowering the salinity (saltiness) of the Gulf.
The Mississippi River
300
This is the rapid exchange of warm and cold water in a lake, and stirs up oxygen and nutrients
overturn
400
These are plants and animals that live on the ocean floor.
Benthos
400
This is a coral reef that is attached to land.
Fringing reef
400
This type of beach is more suitable for plant life because it has cracks and soil for plants to grow in
Rocky beaches
400
This is the largest watershed in the United States.
Mississippi River Basin
400
This is one of the longest rivers in the world, located in Africa.
The Nile River
500
These are microscopic aquatic organisms that perform photosynthesis.
Phytoplankton
500
Coral bleaching can occur when water is too still because there is too much of this.
Ultraviolet Radiation
500
This area of a beach has short, small trees with twisted limbs.
Maritime Forest
500
These are the three types of estuaries.
A salt marsh, salt meadows, and mangrove forest.
500
This is an important river ecosystem in Russia
The Volga River