The Phi Phi Islands are an island group in Thailand between the large island of Krabi and the Straits of Malacca coast of Thailand. The islands are administratively part of Krabi Province. Ko Phi Phi Don is the largest and most populated island of the group, although the beaches of the second largest island, Ko Phi Phi Le are visited by many people as well. The rest of the islands in the group, including Bida Nok, Bida Nai, and Ko Mai Phai, are not much more than large limestone rocks jutting out of the sea. The islands are reachable by ferries, speedboats or long-tail boats, most often from Krabi town or from ports in Phuket Province.