Home - Species of the Month Archive - August 2008.

Species of the Month August 2008

Wakame (c) Keith Hiscock

Common name: Wakame

Latin name: Undaria pinnatifida

A type of brown seaweed


Key Features

  • Can be 1-3 metres long
  • Very 'frilly' with lots of 'ribbons' attached to central mid-rib near base of stipe
  • Has a long stipe

Where to look:

At very low tide on marine pontoons and jetty piles, or rocks. Usually in water 1 to 3 metres deep.


Originating on the west coast of Japan, probably introduced with oysters, or carried on the bottom of ships.

Effects on the environment:

It may compete with native seaweeds as sea temperatures rise.

More information:

Click here find out more about this species on the MarLIN website