(i) Brown algae appear brown or yellow-brown in color because they contain fucoxanthin pigment.
(ii) Macrocystis is a large kelp algae. It forms underwater kelp forests. Its length is 60 meters.
(iii) The region of Atlantic Ocean where Sargassum algae grows in abundance is called Sargasso Sea.
(iv) Many brown algae grow on seashore rocks.
(v) Antioxidants in brown algae are anti-cancer and enhance the human immune system.
(vi) Brown algae species number 2000.
Some brown algae- Macrocystis pyrifera, Sargassum muticum, Ascophyllum nodosum, Laminaria digitata, Fucus elastica etc.