Species:

Note: Thallus has a spongy and siphonous consistence, axes with a round circumference, and is dichotomously branched. It occurs most frequently in shallow and sheltered waters, and individuals can become relatively large (20-30 cm tall). This is an introduced species to the North Atlantic, and has been present in Norway at least since the 1930s. It is separated from Codium vermilara by having utricles ending in a pointed mucron, and by having no more than two hairs or hair scars situated below the shoulder of the utricle.