Great masses of the Chara in our pond will float to the surface if we have a normal (hot sunny) summer. These floating islands appear about AUG 1st. Its not the actual chara that floats but the gasses that are trapped in it when it dies and decomposes then breaks loose from the bottom. If I run the boat through the masses with the motor wide open then they will break up and sink but that doesn't really accomplish anything. In a bad winter we have a shortage of DO as a result of all the dead weeds.
