Fucus distichus prefers the lowest reaches of this zone.This species lacks air bladders and can be identified by flattened blades and spear-shaped tips. Broad, flat blades provide flotation when submerged.

Fucus spiralis can be found in the mid to lower portions of the mid-intertidal, and most abundant just below the band of barnacles that defines the mid-intertidal . This species can withstand long periods of exposure. It lacks air bladders but has distinctive ridges on the receptacles as pictured above. You'll also recognize this species by the blades that curl into spirals.