Hello everyone I am here to post about phytoplankton.

General Information:

Phytoplankton are microscopic floating photosynthetic organisms in aquatic environments, both freshwater and seawater. In seawater, the most common types of phytoplankton are diatoms and dinoflagellates. In the oceans, they are responsible for most of the primary production (photosynthesis). Their photosynthetic activities remove carbon dioxide from the environment and release oxygen; thus they are responsible for mitigating some of the effects of increased carbon dioxide in the atmosphere. Since they need sunlight in order to photosynthesize, they are found only in the upper, sunlit layers of the water. When excessive nutrients are present, there may be excessive blooms of phytoplankton, which when they die and sink to the bottom.

Source(s): http://www.eoearth.org/article/Phytoplankton?topic=49480