1. Benthic algae can be categorized into Green algae (Chlorophyta), Brown algae (Phaeophyta) and Red algae (Rhodophyta), depending upon their pigment color

2. The results showed that the content of Betaines in two species of Chlorophyta and two species of Rhodophyta were relatively high, and that the content of Betaines inEnteromopha prolifera could even reach to 0.9%