In this work, marine algae species which were collected in 1998 on the coastline between Sinop and
Ayancik were investigated. Totally 206 algae species were determined. Eight of them belonging to
blue-green algae (Cyanophyta), 109 to red algae (Rhodophyta), 42 to brown algae (Ochrophyta) and
47 to green algae (Chlorophyta).