Gray whales swim by Mendocino twice a year as they migrate from Mexico to the Arctic. Scott and Theresa Mercer have been counting and documenting them from a bluff near Point Arena since 2014.  The Mercers recently gave a science talk at the Noyo Center that focused on the issues whales face and provided an update on the status of the Gray Whale.  Photo provided by NOAA Wikimedia Commons,  photographer, Merrill Gosho.