Shark watching tours are extremely popular in Phi Phi owing to abundant harmless species sheltered in Loh Samah Bay, Palong Bay, Bida Nok, Viking Cave and Long Beach. Black-tip reef sharks are the easiest to spot. There are no dangerous species of sharks in Phi Phi, so one can also dive into the water for a closer look. Snorkelers have higher chances of encountering than scuba divers, who scare the shark with their noisy bubbles.