The primary way algae adapts to its environment is by varying its pigment to help it absorb sunlight. Most algae can also reproduce both sexually and asexually, increasing their chances of survival.
Algae is classified in the Kingdom Protista, and there are thousands of types of algae in the world. Green algae is the most common, and they can live anywhere from tree trunks to lakes and oceans. There are more than 8,000 species of green algae in the world.
There are more than 6,000 species of red algae living in coastal waters, and they use spore production and fragmentation to reproduce.
Brown algae accounts for around 1,000 algae species, and they live in areas like shallow ponds. This algae has adapted to be able to survive its home freezing or drying up in the summer.