While the Island of Turtles was uninhabited prior to Benjamin Morgan's arrival, there were signs that the indigenous tribes inn the South Prio Sea region had travelled there to hunt or during migrations. The most obvious indication was the carved idol of a giant sea turtle found on the beach. What it signified was unclear to the colonists, but it became a familiar touchstone to the residents of Tortuga. When one benefited from a stroke of good luck, many jokingly toasted "the Great Turtle God" in thanks.
A little something I finally put together after spending a week staring at the completed beach base with a blank stare while bereft of inspiration. This build will be licensed as a Small Cultural property for the colony of Tortuga.