Description: Tufts of profusely branched uniseriate filaments, generally small but up to 25 cms long. Main branches commonly opposite, later branching irregular or secund.

Habitat: Common. Epilithic and epiphytic in littoral rock pools and the sublittoral to 12 m depth.

Distribution: Widespread in the British Isles from the Shertlands to the Scilly Isles. Europe: Portugal, Spain, France, Netherlands, Baltic Sea, Norway, the Faroes, Iceland. Atlantic coast of North America: Canada, Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, Long Island and New Jersey. Further afield: Mauritania, South Africa, south Australia, Karachi (Pakistan), California.

Similar Species: Many fine filamentous brown algae are similar and microscopic examination is required for identification.

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

iNaturalist: Hincksia granulosa at iNaturalist World Species Observations database.

WoRMS: Hincksia granulosa at World Register of Marine Species.