You can search the complete taxonomic tree of the species in the database. Click "Phylum" to get back to to the starting point. The thumbnails show examples of the Class, Order etc.

Phylum	Class	Order	Family	Species
Cnidaria	Anthozoa	Alcyonacea	Alcyoniidae	Alcyonium palmatum
Cnidaria	Anthozoa	Alcyonacea	Alcyoniidae	Klyxum
Cnidaria	Anthozoa	Alcyonacea	Alcyoniidae	Sarcophyton
Cnidaria	Anthozoa	Alcyonacea	Alcyoniidae	Sinularia densa