Talk about situational awareness. Two years ago, Google bought an old paper mill in Finland, which it has converted into one of its state-of-the-art data centers. Along the way, the company decided to take advantage of a seawater-tunnel that was already leading to the facility as part of the cooling system. The tunnel runs seawater from the Gulf of Finland through heat transfer units and then back out to the sea, after mixing it with more incoming fresh seawater. The idea is part of the company's strategy to call upon local resources to develop the best environmental strategy for its facilities.
The company's plan is explained in this YouTube video: