Dinoflagellates are a member of the clade Alveolata. Click onto the following to see some microscopic activity (the movies are best observed in full screen)
Motion of transverse flagellum
Rolling locomotion of typical dinoflagellates
Benthic polykrikos (a pseudocolonial species)
Birefringent properties of the chromosomes of a dinoflagellate
Peduncle feeding in benthic dinoflagellates