The green alga Caulerpa taxifolia with feather-like branches. The leaf is 5-65 cm in length. Photo: NOAA
Organisms that belong to the Division Chlorophycota of Kingdom Protista. These algae contain photosynthetic pigments similar to those in higher plants (chlorophylls a and b, as well as secondary pigments: carotenes, lutein, and zeaxanthin) and have a green color. Green algae include unicellular forms, filamentous forms, and leaf-like thalluses.