General

• Curracag - Outer Hebrides Natural History Society
• Field Studies Council
• Hebridensis
• National Biodiversity Network
• National Biodiversity Network Atlas Scotland
• Outer Hebrides Biological Recording
• NatureScot
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Algae

• Algaebase
• AlgaeVision
• Diatom Flora of Britain and Ireland
• Diatoms Online
• Encyclopedia of Marine Life of Britain and Ireland
• Freshwater algae in Britain and Ireland - Bibliography
• Marine Species Identification Portal
• Outer Hebrides Natural History Bibliography
• The Seaweed Site
• Seaweeds of the South African South Coast
• World Register of Marine Species
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