Description
This is a green alga, although it is often very light to almost white in colour. This depends on the amount of calcium in it's tissue. The lighter the more calcium compounds are included. This alga is a single-cell organism and the nucleus is located in the base. In spring, the reproduction takes place by division of the massive base nucleus. New cells are transported to the hat and are released at the tip. Here they descend and form a new alga.

Size
Height 40 to 100 mm and the hat is about 8 mm to 15 mm in diameter.

Colour
The colour can vary from green to almost white

Habitat
The infralitorale zone on hard substrate.

Distribution
Mediterranean sea.