Pink Sands Beach, Harbour Island, Bahamas. “Harbour Island is just 3.5 miles long and 1.5 miles wide, but this tiny slice of the Bahamas has one of the Caribbean’s prettiest beaches: three miles of pink sand that stretches along the island’s east coast. The red shells of foraminifera (single celled marine animals) mix with the island’s white sand, thus creating the soft rosy hue.”