LAUSR

This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2019 The Authors. Diversity and Distributions Published by John Wiley & Sons Ltd 1Marine Mammal and Turtle Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, California 2Marine Mammal and Turtle Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration contracted by ManTech International Corporation, Solana Beach, California 3Cascadia Research Collective, Olympia, Washington 4Channel Islands National Marine Sanctuary, Office of National Marine Sanctuaries, National Oceanic and Atmospheric Administration, Santa Barbara, California 5Marine Mammal Institute and Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport, Oregon