Koh Bida is actually two islands near Koh Phi Phi. Bida Nok and Bida Yai, with several dive sites on their submarine slopes. Bida was highly variable conditions of poor visibility at times, but it is also an excellent place to coral and marine life to see macro-spots. beautifully colored nudibranchs and sea horses live along the wall Bidasio drops to about 28m, but also many areas too shallow. Incredibly, the whale sharks have alsoto. What to expect: Leopard sharks, snails, turtles, seahorses, ghost pipefish, scorpion fish, squid, sharks, jacks, lionfish.