Thomas Johnson’s music as Killer Whale has always been at home on the water, although its not always clear which coastline that’s near. “Tastes Like Yesterday,” Killer Whale’s new full-length album out Sept. 18, 2020 has the bounce and rhythm of Southern R&B and the sunny haze of West Coast surf folk. The steady development of Killer Whale — across three full-length albums, including 2015’s “Ocean Blood” and 2017’s “Casual Crush,” and a few EPs — comes from Johnson himself straddling the two coasts.