Varieties of Plants and Wild Animals
The national park covers an area of 104 sq.km, including a group of 23 islands off the coast of Krabi as Chong Lat Tai Island, Ka Rot Island, Pak Ka Island, Lao Bile Island (Hong Island), etc,. The landscape is dominated by a series of impressive mountains; precipitous, tall, limestone towers, protruding out of the landscape in a typical Karsts topography. Sink holes in the rock lead the way to underground streams, and numerous mountain cave. Than Bok Khorani National Park is the source and watershed for the water of Ao Luek District, flowing from five important streams; Marui, Klang, Nam Tok, Ao Luek and Ka Rot.

The main plant communities are rainforest, mangrove forest, and freshwater swamp forest.

Rain Forest is found on the steep mountain ranges, Hopea spp., Lagerstroemia spp., Dipterocarpus alatus, Intsia palembanica and Terminalia wallichiana being the dominant trees, and the undergrowth is characterised by Salacca sp., rattan and bamboo.

Mangrove Forest is mostly found around Tham Rot Tai Mountain, Nam Bay and Ka Rot Island. The main species are Rhizophora, Kylocarpus, Bruguiera, Sonneratia and Avicennia.

Swamp Forest covers the footslopes of Chong Lom Mountain. Because the forest no longer covers a wide, continuous area, the variety of wildlife is reduced.

Wildlife
Mammals, include Wild boar, Fishing Cats, Mouse Deer, Gibbon, Langurs, Large Indian Civet, Malayan Porqupine, Pangolin, Otters, Squirrels, Javan Mongoose and Flying Lemurs.

Birds, include Brahminy Kite, Common Koel, White breasted waterhen, Hill Myna, Woodpeckers and Grey Wagtail. The rivers are habitat for a wealth of freshwater species, including True Eel and Long Tom.

Reptiles, such as chameleon, bengal monitor, king cobra, cobra, reticulated python, malayan pit viper, bronzeback, etc.

Fish, whilst the sea supports coral reefs, with both hard and soft corals, Parrotfish, Starfish, and Anemones. Interesting Points

Tourist Attractions
Pre-Historic Cave Paintings
The caves of Than Bok Khorani National Park are particularly interesting for the prehistoric cave art. There is no evidence that people ever inhabited the caves, rather, it is believed they used the caves for religious ceremonies. The ceremonial hand paintings depict people and animals in a geometric design, and can be seen in the area of Phi Hua To Cave, Fai Mai Cape, Tham Chao Le Cape, and Thai Raet Cape.

Than Bok Khorani Waterfall
The water in Than Bok Khorani is green due to the deposit of diluted calcide from the surrounding mountains. The inner pond,120 square metres in size, is quite deep. The source of Morakot Pond is between Khao Wong and Ao Mai Dam. It is a watershed that branches off into streams, some of which come together to form Morakot Pond.

You can make a roud trip of travel in one day by just do a recreation activities, such as swimming in the Than Bok Khorani waterfall, nature sigthseeing in the nearby area, traveling by boat and visit history place and caves.