All algae need access to light and live in oxygenated water. There are more than 7,000 species of green algae, which live in a variety of conditions.
Green algae tends to live in freshwater habitats in areas where they have access to light, which is necessary in order for them to make food. In addition, green algae must live in oxygenated water in order to breathe and thrive. Algae also needs to absorb nutrients like nitrogen to exist, so this is another requirement for the plant's habitat.
Depending on the species of green algae, the exact habitat may vary. Some species prefer warmer water temperatures, as it helps them grow at a faster rate. Other algae lives in colonies on top of water and travel along with the water's currents.