Alison Lester 
Sea Rescue 
Horse Crazy Book 3

During summer vacation at Whale Bay, Bonnie and Sam are charged with shearing sheep and taking care of two horses, Tex, who is afraid of the ocean, and Blondie. Along the way, they stumble across clues to a mystery at Skull Rock. Kids won’t be able to resist this page-turner as Bonnie and Sam put together the clues and catch the abalone poachers!