Description: Thallus dichotomously branched, terete, to over 25 cms long with a felt-like surface and spongy feel. Utricles, sharply pointed.

Habitat: Common. Epilithic in mid-littoral rock pools and the upper sublittoral.

Distribution: Widespread in the British Isles. Europe: Spain, France, Norway and Iceland. Atlantic coast of North America: Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, Long Island and Virginia.

Similar Species: Other branched species of Codium do not have a mucronate utricles.

Key Identification Features:

• Sharply pointed utricles.

Distribution Map from NBN: Codium tomentosoides at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Codium tomentosoides at iNaturalist World Species Observations database.

WoRMS: Codium tomentosoides at World Register of Marine Species.