Chlorophyta include species that live in the sea as well as many that live in fresh water.

Some Chlorophyta are single cells. Most species have a single-celled stage in their life cycles that swim using flagella. Haematococcus pluvialis

Chlorophyta are a division of green algae.

It includes about 7,000 species of mostly aquatic photosynthetic eukaryote organisms.

Like the land plants, green algae contain chlorophylls a and b, and store food as starch in their plastids. Most species are flagellate in at least one stage of their life cycle.

They are related to the Charophyceae (also called Charophyta) and land plants, together making up the Viridiplantae.