Codium australasicum

Codium australasicum is a species of seaweed in the Codiaceae family.

The erect dark green thallus typically grows to a height of 50 cm. It is repeatedly dichotomous and has terete branches.

It is found in sublittoral zones in rough shaded waters to 33 m in depth.

In Western Australia is found along the coast in two places; near Rockingham and Albany. Its range extends around southern Australia, including Tasmania to Tuggerah in New South Wales as well as on the coast of New Zealand.