Algae

Phytoplankton P

Characteristics:

Free-floating plants that are mostly unicellular and form the base of the aquatic food chain

Characteristics:

Free-floating plants that are mostly unicellular and form the base of the aquatic food chain

Range:

Worldwide

Size:

Microscopic

Habitat:

Fresh and salt water

Fun Fact:

Phytoplankton are primary producers, effectively producing much of the oxygen we breathe on land

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Sea lettuce P

Ulva lactuca

Characteristics:
Bright green, sheet-like frond

Characteristics:
Bright green, sheet-like frond
Range:
Worldwide in temperate and tropical climates
Size:
Mats can reach up to 3ft (1m) in width
Habitat:
Attaches to hard substrate in estuarine intertidal and shallow subtidal zones
Fun Fact:
Used in many personal care, gardening, and fertilizer products
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