Seafloor Restoration

Innovative ROV technology for seagrass planting projects.

Product Details "Grasshopper"

Sourced from Bluehorizon/Reefgen

Product Details Seeds+Shoots

Sado/Portugal Nursery

Cost Reduction & Shoot Supply Boost with Sado Nursery

• Stable 15-25 ppt salinity and 15-25°C temps optimize Z. marina growth, cutting cycles to 6-12 months vs. 9-18 months in Baltic/North Sea.

• Nutrient-rich Sado inflows and 2-4 m tides provide natural fertilization and allows energy efficient water replacement and airation.

• Optimal waterquality as declared Natura 2020 nature reserve

• 2,800+ sunshine hours/year enhance photosynthesis 20-30% over North’s 1,500-2,000 hours, accelerating biomass and reducing propagation costs (INE).
  

• Other variants of seagrass optional

• Local labor cost advantage

• Scalable 10 ha setup with existing infrastructure

• Integrated concept with bivalent filters to improve water quality

• Established fresh produce supply chains (from adjecent fish and oyster farms) allow export at optimal cost point

Custom design for seagrass & coral planting:

• Operating depth : 0-10m in Oceanwater

• Weight : aprox 25kg for easy airtravel and minimal
  support vessel requirements

• Planting speed : aprox one growth hectar during a 5 days daylight workweek; reduces in tandem operations;
  in comparism a hectar to be planted by divers requires 5 to 10 times the time.

• Cost rate : based on supports vessel lease costs, commercial divers cost and speed
  advantage ->project costs can easily be cut in half by hectar

• Planting density : Typically 20.000 shoots per hectar with
  growth patches with higher density

• Survival rate : 80-90% with shoots (local transplants)

• Planting tools : Tray (26 shoots) or funnel to support vessel

• Option for shoots

• Thoroughly tested technology!
  (4th generation) and approved by marine biologists from the USA, UK, and Indonesia.

• Monitoring during planting and control of the planting/sowing process. This allows a fully digital certification process.