A rare fin whale weighing around 50 tons was killed last Thursday when it was struck by a vessel off the coast of Point Reyes, fracturing its spine, ribs and other bones and damaging soft tissue, Point Reyes National Seashore spokesperson John Dell’Osso said. The deceased whale, a 47-foot juvenile, has since washed up on a remote beach in a southern corner of the seashore. Scientists hiked more than 90 minutes to the whale’s location…