Bida Nok

The outer of the two Bida limestone pinnacles south of Phi Phi Leh, 15 to 30 minutes by boat from Tonsai. There is no beach; the island is a dive and snorkel site with steep walls, soft corals, leopard sharks and turtles, and it is one of the most famous dive spots in the Phi Phi area. Inside the national park, so the park fee applies.

Bida Nok is the southern of the two Bida pinnacles south of Phi Phi Leh, a dive site about 30 minutes by boat from Tonsai.

Not that we know of. This page on kohphiphi-live.com shows what Bida Nok is and where to find it.