Concerns have been expressed about the danger to fish and other marine life, both directly from the turbines and through the disturbance to the sea floor by construction, anchorages and supply cables. In general the turbines would be relatively slow moving and it is believed that fishes will detect the pressure changes and avoid being caught. This is a contrast to the turbines on barrage tidal systems where 15% mortality of fish passing through the turbines is observed. To confirm this, a monitoring programme has been established at Strangford Lough.
Damage to seabed flora is also potentially dangerous and designs are being explored which are anchored to the seabed but operate at a distance, rather than having towers built on the bed. Since there are at present no firm plans for deployment of these devices, it is difficult to evaluate whether this will be a serious problem.
Damage to seabed flora is also potentially dangerous and designs are being explored which are anchored to the seabed but operate at a distance, rather than having towers built on the bed. Since there are at present no firm plans for deployment of these devices, it is difficult to evaluate whether this will be a serious problem.
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