In recent years, a number of plants have been set up for manufacturing agar-agar from Indian seaweeds. The available resources of seaweeds are scanty and is likely to dwindle further. Hence, it is necessary to augment the resources by cultivation of the economically important species.

Cultivation of seaweeds may be achieved either by vegetative propagation or by collecting and germinating spores in specially designed nurseries and later transplanting the sporelings in the sea. This paper describes the experiments carried\out at the Marine Algal Research Station, Mandapam and evaluates the results ' obtained in these experiments.