Chaetoceros affinis is a species of diatoms in the family Chaetocerotaceae. They are native to Alagoas, Rio Grande Do Sul, Pernambuco, Rio De Janeiro, Paraná, SãO Paulo, ParaíBa, Espirito Santo, Sergipe, and Rio Grande Do Norte. Dead Chaetoceros affinis form siliceous oozes.
EOL has data for 23 attributes, including: