Freshwater

"Fresh" water environments that do not contain much salt.

Rivers and Streams

Natural bodies of moving water that empty into seas, oceans or lakes.

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Lakes and Ponds

Inland bodies of standing water. Usually freshwater but can be saline. In general, lakes are better than ponds.

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Wetlands

Lowland areas that are saturated with water. Includes marshes, swamps and bogs.

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Temporary Pools

Small bodies of standing water that periodically dry up and then refill with water when it next rains.

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Brackish

Areas where freshwater meets saline water, usually when a river flows into the ocean and tidal influences change the salinity of the water. Includes places like estuaries.