The present invention mimics the natural process of oceanic upwelling wherein deep ocean water rises into the photic zone and provides a nutrient rich environment for phytoplankton, the beginning of the marine food chain. The power of waves is utilized to cause a down-flow of warm surface water though a plurality of conduits. A heat exchange process delivers warmth to the deep water which rises in a conduit due to a buoyancy that results from the warming. Deep ocean water that is rich in nutrients is brought into the photic zone to facilitate the primary production of marine life. The present invention can convert a non-fertile ocean environment into a fertile ocean environment. This fertile ocean environment can be used for aquaculture and to restore and also to enhance marine populations. The present invention vertically mixes ocean water which has a multitude of other advantages.