There are six islands in the group known as Phi Phi. They lie 50 km south-east of Phuket and are part of Hadnopparattara-Koh Phi Phi National Park which is home to an abundance of corals and marine life. There are limestone mountains with cliffs, caves and long white sandy beaches. The national park covers a total area of 242,437 Rai. Phi Phi Don and Phi Phi Le are the largest and most well-known islands. Phi Phi Don is 28 sq.m: 8 Km in length and 3.5 Km wide. Phi Phi Le is 6.6 sq. km.
Most of the development of Phi Phi Don is situated in or around Ton Sai village, which is on the low, sandy isthmus that joins the two hilly spurs that comprise the rest of the island. There are also other, quieter resorts on Long Beach, Laem Thong, and at other less accessible areas of the island. Phi Phi islands are parts of Had Nopparatthara - Mu Koh Phi Phi Marine National Park. Koh Phi Phi consists of 6 islands, lying between Phuket and the Andaman sea. Those are:
Phi Phi is abundant of corals and amazing marine life. Phi Phi has been rated as one of the ten most beautiful islands of the world in the past.
Most popular activity here is "diving". There are limestone mountains with cliffs, caves and long white sandy beaches. Another favorite sport is rock climbing.
Getting to Phi Phi is much more convenient than before. In addition to Phuket, you may take a ferry from Ao Nang, Railay and Ko Lanta easily. For more details, How to get to Koh Phi Phi.
There are 3 ways to get to Koh Phi Phi
For more information, http://www.thaiferry.com/krabi-ferry/ferry-to-phi-phi/