
Turning shell waste into sea life
ReefCircular uses shell waste and 3D printing to produce artificial reefs, restore ocean habitats and increase marine biodiversity.

54 REEFS 600 OYSTERS 2.6 MILLION FISH
54 REEFS 600 OYSTERS 2.6 MILLION FISH
At ReefCircular, we work on a project-by-project basis to ensure that what we deliver is what nature needs - focusing on results and impact to fight biodiversity loss. Our clients are governments, research institutions and NGOs - both large and small.
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Homes for oysters
ILocation: Loch Craignish, Scotland
Number of Reef Modules Deployed: 30
Number of Designs: 1
Reef Material: Aegironite®
KPIs: 600 Flat European oyster spats glued to reefs, which will be monitored and measured to study the mortality and growth rates
Homes for fish and seaweed
Location: Hundested, Denmark
Number of Reef Modules Deployed: 24
Number of Designs: 2
Reef Material: Clay
KPIs: 400% greater fish activity, 200% greater species diversity compared to control, and over 2.6 million fish visits registered using AI species recognition and continuous camera monitoring.
Danish Design Award Finalists 2024
ReefCircular embodies classic Danish Design principles like modularity, innovative materiality, and functional design.
CEO Kathryn Larsen explains the ReefTile product, and the behind the scenes of testing Aegironite® to Danish Design Award 2024.




We use biomimicry in our designs to enhance ocean biodiversity.
