Phytoplankton > Green Algae > Cosmarium
(Phylum Chlorophyta > Class Chlorophyceae > Order Chlorococcales > Family Oocystaceae)

	Oocystis sample: Cultus Lake photo: Danusia Dolecki		Oocystis and Cryptophyte mix sample: Cultus Lake photo: Danusia Dolecki
Images are false colour. Photos by Danusia Dolecki.