Surfer Jamie Mitchell -- widely regarded as one of the best all-around athletes in the sport -- had a freak accident riding waves in Hawaii this week ... suffering brutal gashes to his face, throat and head. Mitchell, 48, described what happened in an Instagram video ... stating he was hit by the fins of his big-wave board while surfing one of his favorite waves on Tuesday. The Australian surfer shared evidence of his bloody injuries before he got bandaged up ... and they're pretty gnarly. You

Tag-uri: Instagram accident