GALVESTON, Texas — Coast Guard crews assisted a 17-year-old male Monday after he sustained a shark bite injury aboard a recreational vessel offshore Galveston. Sector Houston-Galveston watchstanders received notification from the Galveston County Sheriff’s Office reporting a vessel with three people aboard transiting toward Galveston Yacht Basin with an injured teen onboard. The vessel later became disabled near the Galveston South Jetties, acco…