PORTLAND, Ore. (AP) — Tuesday marks the first-ever U.S. auction for leases to develop commercial-scale floating wind farms in the deep waters off the West Coast. The live, online auction for the five leases — three off California’s central coast and two off its northern coast — has attracted strong interest — 43 companies from around the world. It marks America’s first foray into floating wind turbines; auctions so far have been for ones that are anchored to the seafloor. The need for energy that does not put more carbon into the atmosphere is increasing as climate change takes a toll. Environmentalists and tribes say they want to make sure the offshore and coastal development is done right.