• Kingdom: Plantae
  • Phylum: Ochrophyta
  • Class: Phaeophyceae
  • Order: Desmarestiales 
  • Family: Desmarestiaceae
  • Scientific name: Desmarestia viridis
  • Norwegian: mykt kjerringhår

Characteristics:

Typical for this delicate, light brown, seaweed is that the branching is always opposite. The main stipe and branches have a circular cross section. It may reach a height of 50-60 cm. When destroyed it releases sulfuric acid.

Habitat:

It is found on sand or rocky substrate in the low tidal or the subtidal zones, as deep as 20 meters.

Distribution:

It is found worldwide.