Introduction to Coralline Algae
- Information on the biology of these algae, including collection, preservation, staining, mounting and their systematics.
- http://www.botany.uwc.ac.za/clines/default.htm

Nongeniculate Coralline Algae
- Research project by Melissa Roth on this extraordinary group of algae, with much information and accompanied by many interesting photographs.
- http://www.mbari.org/staff/conn/botany/reds/nongencor/default.htm

Articulated Coralline Algae
- Research project by Ian Ehrenreich provides a great deal of information on these red algae, accompanied by several photographs and diagrams.
- http://www.mbari.org/staff/conn/botany/reds/ian/default.htm

Coral Weed: Corallina officinalis
- Basic information on this species, its biology and habitat, with a photograph.
- http://www.marlin.ac.uk/species/Corallinaofficinalis.htm

Lithothamnion corallioides
- Information on this species, which grows on mud or gravel, and its biology, with a photograph.
- http://www.marlin.ac.uk/species/Lithothamnioncorallioides.htm

Maerl: Phymatolithon calcareum
- Photograph of this species forming a maerl bed, and its description, biology and habitat.
- http://www.marlin.ac.uk/species/Phymatolithoncalcareum.htm

Lithothamnion glaciale
- A photograph of this species and information on its description, biology and habitat.
- http://www.marlin.ac.uk/species/Lithothamnionglaciale.htm