Why should you go there and how do you do it right?

Located just off Long Beach on Koh Phi Phi Don, this reef is considered one of the best places in the Krabi archipelago to observe blacktip reef sharks in their natural habitat. The shallow waters and pristine coral reefs make it accessible to both snorkelers and divers, and the surrounding waters teem with a diverse array of tropical fish and marine life. Shark sightings are frequent but not guaranteed – some visitors spot one or two sharks on a single trip, while others enjoy the reef without seeing a single shark.

Dive schools and longtail boat operators in the village of Tonsai regularly offer trips to the island, making it easy to book them on-site. Some visitors also swim out independently from the nearest shore, but it's important to be aware of boat traffic and currents. According to reports, conditions are usually calmer and visibility is better in the morning before boat traffic increases. The area can get very crowded at peak times, so an early arrival is recommended for the best diving experience.

The dry season, roughly from November to April, offers the most reliable sea conditions and the best water quality. During the monsoon season, rougher waters and reduced visibility can detract from the experience. Reef-friendly sunscreen and a UV-protective shirt are recommended items for extended periods in the water. Visitors staying near Phi Phi Island can also easily reach this spot, as several accounts mention taking a longtail boat from Tonsai Pier.