Bacteria>Negibacteria>
Cyanobacteria
Cyanophyceae
(Alghe Azzurre)

Chromista>Heterokontophyta>
Bacillariophytina 
Bacillariophyceae
(Diatomeae - Alghe Silicee)

Chromista>Harosa>Alveolata>Myzozoa> Dinozoa > Dinoflagellata
Dinophyceae
(Alghe Giallo-Brune)

Chromista>Harosa>Heterokonta>
Ochrophyta
Chrysophyceae
(Alghe Dorate)

Plantae>
Biliphyta
Rhodophyta
(Alghe Rosse)

Plantae>
Viridiplantae
Chlorophyta
(Alghe Verdi)

Streptophyta>Tracheophyta>
Spermatophytina> Magnoliopsida
Fanerogame marine
(Piante superiori)