Greenish-brown foliacea algae, translucent, 60 to 120 cm in lenght and fixed to the substrate by a long stem with denticulate margins and a blade with an evident central rib. Native of Pacific, lives in deep areas, can reach 1,5 meters in length. Second most consumed seaweed In the world. Specie of considerable economic importance as food source in Japan, Korea and China.

References: 

Wendy Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 22 November 2013.

Pereira,L. Guia Ilustrado das Macroalgas. 2009. Imprensa da Universidade de Coimbra, página 54-55.