Abstract
Seaweed forests are important as spawning, nursery and food supplying areas for fishes and shells. The natural seaweed forests have been decreasing in recent years resulted from reclamation and water quality deterioration, etc. Thus a number of trials to construct artificial seaweed forests have been done near various natural forests with concrete blocks or natural stones. This report describes the method to determine the wave force on the individual seaweed body on the basis of a series of experiments including a large wave flume experiment. The report also proposes to take this force into consideration for the design of the required weight of the cover layer blocks for an artifitial seaweed forest bed.
