Koh Hey, professionally known among international travelers as coral Island, is a small limestone gem located approximately 10 kilometers off the southern coast of Phuket. Its primary geographical distinction is the expansive shallow-water coral reef that runs parallel to its shoreline, making it a premier destination for shore snorkeling without the need for further boat transit once on the island. The island topography features two primary beaches: "Long Beach" and "Banana Beach," which are interconnected by a short jungle trail cutting through a hill that serves as a natural habitat for indigenous Great Hornbills—a biological indicator of the island's well-preserved ecosystem.

In terms of administration and land use, Koh Hey is not part of a national marine park but is managed through a combination of private concessions and local community efforts to facilitate comprehensive marine recreation. At Long Beach, visitors find standardized amenities, including the island’s sole accommodation, the Coral Island Resort, alongside international dining facilities and professional SCUBA diving centers. Conversely, Banana Beach offers a more premium and secluded ambiance, characterized by its eco-friendly bamboo architecture and upscale facilities designed to blend into the tropical landscape, catering to travelers seeking tranquility and aesthetic surroundings.

The marine biodiversity surrounding Koh Hey includes various coral species such as Porites (Hump corals), Acropora (Staghorn corals), and Brain corals, providing a vibrant sanctuary for reef fish including Parrotfish, Wrasses, and Clownfish. Beyond traditional sunbathing, the island is a hub for active tourism, offering Sea Walking and Parasailing experiences. Due to its strategic location, Koh Hey remains relatively sheltered from the heavy monsoon swells that often impact more distant islands like Koh Racha, allowing it to function as a reliable year-round destination and a crucial alternative for Phuket's tourism during the rainy season.

• Travelers can rent a long-tail boat or a speedboat from "Chalong Pier" or "Rawai Pier," taking only 15–30 minutes. Numerous day-trip packages are also available, which typically include round-trip transfers and lunch.

• Visit early for clearer water and fewer crowds

• Choose Banana Beach for better snorkeling spots

• Use reef-safe sunscreen to protect marine life

• Be aware of extra charges for water activities

Admission Fees:

• Free admission.

Opening Hours:

• Open year-round (Recommended visiting hours: 08:00 – 17:00, depending on boat schedules).