It is bright green and is an annual plant, which dies off in late summer and early autumn. There are 14 species which are difficult to distinguish from each other. Thin, vivid green sheets, can be beached to white at this time it looks like shredded paper.

Attaches to rocks in intertidal but can form large free floating sheets. On Mudflats it is found attached to hard surfaces such as stones and shells, may also be found drifting loosely.

It produces its own food through the process of photosynthesis.

Seaweeds of NZ; Adams