For travellers seeking a truly off-the-beaten-path island escape with pristine natural beauty, consider making the journey to Cu Lao Xanh (Green Island). Located further offshore from Quy Nhon than Hon Kho (requiring a longer boat trip, often from Ham Tu harbor), this small island lives up to its name with lush greenery, exceptionally clear turquoise waters, and beautiful, undeveloped beaches. It remains relatively untouched by mass tourism, offering a glimpse into quiet island life and stunning coastal scenery.

Cu Lao Xanh attracts visitors primarily with its natural allure. Enjoy swimming and sunbathing on quiet beaches with fine white sand, snorkel or dive (arrange gear beforehand) in the remarkably clear waters exploring coral reefs, or hike up to the island's historic lighthouse for breathtaking panoramic views of the surrounding ocean and coastline. The island is also home to a small fishing village where you can observe the simple, traditional lifestyle of the islanders.

Visiting Cu Lao Xanh requires more planning than trips to closer islands, involving potentially longer boat rides (check schedules and weather conditions) and fewer established tourist facilities (though basic homestays and simple eateries exist). However, the reward is experiencing a relatively unspoiled Vietnamese island paradise. For adventurous travellers seeking pristine nature, tranquility, and an authentic island experience away from the crowds, Cu Lao Xanh stands out as a remarkable hidden gem in the waters off Quy Nhon.