according to a mangrove food web which organism is a producer in the mangrove swamp Crab, Mold, Pelican, Or Phytoplankton

Phytoplankton.

Explanation:

This is because in the mangrove swap, phytoplankton is a green plants that have green pigment called chlorophyll uses light energy from the sun with carbondioxide and water to produce carbohydrates. Phytoplankton is a primary producer because it manufacture it food through the process of photosynthesis and it is the source of flow of energy in the habitat.

your spelling is a little off : ]

you can have just about every answer you can think of