As far as they could see there was no algae in sight, the water was one glassy blue.
The simplest form of vegetation is algae which grows on the sides of the tank.
He regarded a bowl of algae as if about to make it disappear.
We've put quite a dent in the algae and synthetics operations in this sector.
The Carrageen or Iceland moss, or lichen is one of the algae of the sea.