Let's talk datacentres, shall we? They take too much space, require constant cooling and use too much power to run. Microsoft reckons it would be better for all if such oversized computers would be put under the sea, where they bother no one. Yes, really.
Of course such an idea demands at least some testing-- which is what Microsoft did on August 2015, when it dumped a a datacentre packed inside an experimental vessel in the bottom of the Pacific Ocean. Christened "Leona Philpot" (after a character from the Halo game series), the datacentre operated on the seafloor for 105 days, and is described as a reflection of Microsoft's "ongoing quest for cloud datacenter solutions that offer rapid provisioning, lower costs, high responsiveness, and are more environmentally sustainable."
The idea for underwater datacentres comes from a number of Microsoft employees, including one with experience working on Navy submarines. This makes sense, since submarines are all about running sophisticated electronics under water, and of course we all know of the century-old tradition of lying cables on ocean floors all over the world.