The Marine Donut is once again filled with fish. This time, 185,000 happy salmon, each around 3 kg, are swimming in the current inside the "donut".
The second production cycle is well underway at Sekken, outside Molde.
SalMar successfully stocked 185,000 salmon, each around 3 kg. The fish will remain in the Marine Donut until they reach slaughter weight of approximately 5.5 kg.
The first production cycle, completed last autumn, demonstrated strong results:
Low mortality: Only 0.8% of the fish died over the entire production cycle.
Good fish health: Despite entering the system with pancreas disease (PD), the fish showed good overall health and low mortality.
High fish welfare: Extensive monitoring indicated excellent welfare, including observations on skin lesions, cataracts, deformities, gill condition, and stress levels.
Stable water quality: Oxygen, pH, salinity, and temperature were all maintained at good levels. Some challenges with turbidity measurement were identified but had no negative effect on water quality.
Efficient harvest: The system was emptied in October 2024, with 195,000 salmon sent for processing. The harvest went according to plan, with minimal stress for the fish.
Technical performance: Water exchange worked well, and the system was further optimized during operation to enhance performance.
Do you have any questions or comments about the Marine Donut? Want more information about the technology and performance? Don’t hesitate to get in touch!
