Stypopodium zonale is a species of thalloid brown alga in the family Dictyotaceae.
Stypopodium zonale is a golden brown or olive-coloured seaweed growing to a length of about 40 centimetres (16 in).
It has smooth, broad blades with squared-off ends that grow in a fan shape.
It is attached to rock by a rhizoidal holdfast and often forms dense beds, the leathery but flexible fronds swaying with the movement of the surrounding water.
[2] A number of secondary metabolites have been isolated from Stypopodium zonale including several unique cyclic terpenes.