System and methods for oceanic carbon dioxide and climate management, algal fostering, and initiation and maintenance of fisheries by deep water pumping

A system for causing an upwelling to create a fishery without altering thermoclines in a body of water, comprising:

• an electric pump housed in a floating buoy;
• and
• a heat exchanger hose comprising a plurality of protrusions;
• wherein the heat exchanger hose and the electric pump are configured to pump water from a first depth of the body of water to a second depth of the body of water, the second depth being closer to a surface of the body of water than the first depth;
• wherein the pumped water is nutrient-rich water;
• and
• wherein the plurality of protrusions is configured for transferring heat from surrounding waters to the pumped water within the heat exchanger hose;
• and
• wherein the system is configured to release the pumped water only when it is warmed to around the ambient water temperature of the second depth of the body of water, such that the pumped water remains at the second depth without immediately sinking back down to the first depth.