A new search for missing Malaysian Airlines flight 370 by a private U.S. company, Ocean Infinity, began in late January using 8 Autonomous Underwater Vehicles (UAVs) (photo), and after a weather delay in mid-February, has now covered about 8,200 km2 of a 25,000 km2 search area.
Ocean Infinity posts weekly updates on their website. On 2/27/18 the company reported “no significant contacts identified to date.” Of course, you’ll know if they find the plane, because that will make headlines.