Amid another record warm year for the planet, one of the most dramatic and alarming changes occurred in our oceans, according to the National Oceanic and Atmospheric Administration (NOAA). They are the warmest they've been in recorded history. In fact, the ocean heat has been topping its own record annually for the past seven years, with last year's record set despite the absence of El Niño — a warming in part of the Pacific Ocean that tends to drive up global temperatures.