What are seaweeds?

What are seaweeds?

Seaweeds are large sized algae that are found in the sea, or on the seashore. They are normally green, brown or red in colour or grow in the shallow areas of the sea where they can get sunlight. The kelp is a type of algae that is brown in colour and grows about 18 metres down in the sea. Red algae grow at depths of 30 to 60 metres. Some seaweeds float near the surface with the aid of air-filled bladders. Seaweeds provide grazing for many varieties of sea life and oxygenate the water.

Although called a weed, seaweed is edible. ‘Alginates’ from seaweed is used to set ice-creams. It is also extremely useful as a source of iodine. Seaweed is used on land as a fertilizer.

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