Algae
| Algae | |
|---|---|
| Organisms that perform oxygenic photosynthesis, except land plants | |
 Marine algae growing on the sea bed in shallow waters | |
 Freshwater microscopic unicellular and colonial algae | |
| Traditional algal divisions[1][2] | |
| Prokaryotic | Cyanobacteria |
| Eukaryotic (primary endosymbiosis) | Glaucophyta, Rhodophyta, Prasinodermophyta, Chlorophyta, Charophyta* |
| Eukaryotic (secondary endosymbiosis) | Chlorarachniophyta, Chromeridophyta, Cryptista (partially), Dinoflagellata, Euglenophyta (partially), Haptophyta, Heterokontophyta |
| *paraphyletic, it excludes land plants | |
| Diversity | |
| Living | 50,605 species |
| Fossil | 10,556 species |
Algae (