Low Sandy Island is an uninhabited island located in the Caribbean Sea, off the coast of Belize. It is part of the Turneffe Atoll, and is known for its white sandy beaches and crystal clear waters. The island is also home to a variety of wildlife, including sea turtles, dolphins, and tropical fish. The crossword solution for Low Sandy Island is CAY, which is a term used to describe a small, low-lying island.