It would cost about 10 billion dollars to make the 1500 tunnels. They would cross the 50 mile width of the Gulfstream just SW of Key West and would protect the east coast of the USA. from Key West to Maine. The water can be regulated to any temperature between 70 and 90 degrees by opening or closing a gate on the discharge of the tunnel at the surface thus regulating SSTs. The power generated woud be enough for 22 million people and the tunnels would pay for themselves over time and nip away at the cause of global warming. It seems like a small price to pay instead of paying for 200 billion dollar plus storm nowadays let alone the lifes they take. If it would save one life it would be worth it to me. 70 degrees is what winter time temps. are anyways so no harm to environment would occur.