Which island southeast of the Arabian Peninsula has strong ethnographic links to Arabia?

The island of Socotra, located in the Indian Ocean approximately 200 miles southeast of the Arabian Peninsula, has strong ethnographic links to Arabia.1

Politically, the island is part of Yemen. Its cultural and linguistic ties to the region are evidenced by the presence of the Soqotri language, which is a Modern South Arabian language closely related to dialects spoken on the Arabian mainland, such as Mahri. Historically, the island was also long ruled by the Mahra sultans of southeastern Yemen.2134