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Rights: Stef Maruch, Creative Commons 2.0 Published 17 September 2009 Size: 630 KB Referencing Hub media

Seaweed is a type of algae and is normally grouped by colour – green, red or brown. Seaweed is a primary producer and an important source of nutrients and energy in the marine food web. Seaweed generally grows in clusters called ‘beds’, and these provide an important source of shelter for many marine species, including mussels.