Chorda filum
- Photograph and information on this brown seaweed, sometimes known as Sea Lace or Dead Man’s Rope, its habitat, description, general biology, taxonomy and reproduction.
- http://www.marlin.ac.uk/species/Chordafilum.htm

Asperococcus scaber
- Information on this brown seaweed, its habitat, description and key identification features.
- http://www.marlin.ac.uk/species/Asperococcusscaber.htm