Kelp
Kelps are large brown algae seaweeds that make up the order Laminariales. There are about 30 different genera.
Ecklonia maxima
Ecklonia maxima, or sea bamboo, is a species of kelp native to the southern oceans. It is typically found along the southern Atlantic coast of Africa, from the very south of South Africa to northern Namibia. In these areas the species dominates the shallow, temperate water, reaching a depth of up to in the offshore kelp forests.