We recently spotted a Leatherback Sea Turtle on our sunset boat tour. 1500 pound leatherback turtles are a rare sighting, especially on the Cape Fear River. When vacationing on Brunswick Islands spotting sea turtles is always a special moment. The most common is the 250 pound Loggerhead sea turtles. Loggerhead sea turtles nest on all our local beaches; BHI Bald Head Island, Caswell Beach on Oak Island, Holden Beach, Ocean Isle Beach and Sunset Beach.