A system for supplying land based fish farms With seawater wherein the system comprises a pump (2) anchored to the sea floor, said pump (2) transports water to a collection manifold (3) and further to at least one holding tank or at least one pool with at least one net pen, depending on the elevation of the at least one holding tank or the at least one pool with at least one net pen, the water drains to the sea and is further characterised in that an energy generating device provides energy to said pump (2).
