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	Actiniaria	Actiniidae	Anemonia viridis
Cnidaria	Anthozoa	Actiniaria	Actiniidae	Anthopleura elegantissima
Cnidaria	Anthozoa	Actiniaria	Actiniidae	Bunodosoma granulifera
Cnidaria	Anthozoa	Actiniaria	Actiniidae	Condylactis aurantiaca
Cnidaria	Anthozoa	Actiniaria	Actiniidae	Condylactis gigantea
Cnidaria	Anthozoa	Actiniaria	Actiniidae	Urticina lofotensis