Koh Bida Islands
Koh Bida Nok is located 2 km/1mi south of Koh Phi Phi Ley. The site is one of the most popular dive sites in Koh Phi Phi. Topography of this site range from a shallow sheltered bay and reefs sloping to 18m/59ft and the deep side with walls dropping down to 20-25m/65-82ft. Divers here can explore a steep wall and a few caverns. The south entry site is good for novice divers. Here divers can expect to see coral gardens, sea snakes, and hawksbill turtles. The west side of the island offers some good walls and swim-throughs to discover. The north entry site of the island is more suitable for advanced divers.
When To Go Diving
The best conditions for diving here are from February to May. The water temperature: 27-30C/80-86F. The best visibility being between January and April.
What to see
Walls covered with sea fans and soft corals, sloping reefs, caves, anemones, high diversity of hard corals, barrel sponges in the shallows and whip corals in the deeper areas. Marine life of the site includes snappers, barracuda, trevallies, tuna, moray eels, blacktip sharks, leopard sharks, black tip reef sharks, nurse sharks, as well as at times mantas and whale sharks on the deep side (from December to February).