Rocky shores, mangrove roots and other hard surfaces provide anchorage for seaweeds or benthic macroalgae along the environmentally relatively inhospitable coast of tropical West Africa. This user-friendly guide deals with the over 300 species of green, brown and red seaweeds known from an almost 4,000 km long stretch of West African coast (Gambia to the equator) as well as islands in the Gulf of Guinea. Descriptions and identification keys are relatively free of technical terms. Each entry takes the form of a diagnostic description of the species along with notes on its West African distribution, ecology and taxonomic or identification problems. Included are more than 250 clear line drawings and 46 colour photographs that usually emphasise features required for accurate identification.