Richeliru Stone

Ko Torinla or Ko Khai

Ko Mang Kon or Ko Pachumba

Ko Satok or Ko Ri

Kong Rock

Ao Chak

Ao Chong Khat

Ao Tao

      Mu Ko Surin was created by the wind and waves and has large bays and coral reefs along the shores of Ko Surin Nuea, Ko Surin Tai, and other small islands. The oceanographic conditions of the islands are suitable for the development of coral reefs as there is clear water, moderate temperatures, and a mix of warm and hot water undersea. This creates an abundance of plankton and nutrients, which can be used a food source by the coral and other marine life. Another important oceanographic factor is the Semidiurnal tides in the Andaman Sea, which causes twice the time of high and low tide within 24 hours. The water level differences might be up to 3 meters, thus causing strong currents.

       Ko Surin Nuea and Ko Surin Tai are like twin islands with shallow water between them that is about 200 meters wide. At low tide, visitors can stroll across to another island, which is called Ao Chong Khat. The other three smaller islands are rocky  with dense coverage of small, evergreen trees. They are the origin of one of the largest and most complete shallow coral reefs in Thailand.

      Mu Ko Surin National Park is influenced by the monsoon climate, and it has three seasons as follows: 
      Summer runs from mid-February to mid-May, and is the period  between the monsoon seasons. The wind blows from the southeast, causing sweltering heat, with the hottest month being April. Summer is the best season for traveling to the Mu Ko Surin.

     The rainy season is from mid-May to mid-October and it is when the southwest monsoon prevails, which causes periodic low pressure systems which bring rain throughout the season. September has the most rainfall, and more than 3,000 millimeters falls every year.
     Winter is from mid-October to February and is influenced by the northeast monsoon winds. This causes a slight drop in temperature and there is general rain.

Humidity is high throughout the year, with an average of –approximately 83-84%.

         Mu Ko Surin National Park forests can be classified as follows:
Tropical rain forest covers the most of the National Park, and it includes plants such as Nephelium hypoleucum Kurz, Marian Plum, Diospyros cauliflora, Hydnocarpus ilicifolius King, Pterospermum diversifolium Blume, Diospyros areolata King & Gamble, Diospyros sumatrana Miq., Diospyros wallichii King & Gamble, Diospyros undulata, Atuna nannodes (Kosterm.) Kosterm., Knema laurina (Blume) Warb., Microdesmis caseariifolia Planch. ex Hook.f., Parishia insigmis, Dracontomelon dao, Dipterocarpus grandiflorus, Dipterocarpus costatus Gaertn.f., Vatica harmandiana Pierre, Endospermum diadenum (Miq.) Airy Shaw, Antidesma bunius (L.) Spreng., Dillenia aurea Sm., Stemonurus malaccensis, Red Sandalwood Tree, Prunus arborea, Antidesma sootepense Craib, Cleistanthus gracilis Hook.f., Galearia fulva (Tul.) Miq., Anisoptera costata Korth., Ficus annulata Blume, Ficus altissima Blume, Aquilaria malaccensis Lamk, Psydrax dicoccos Gaertn., Flacourtia jangomas (Lour.) Raeusch., Garcinia merguensis Wight, Hunteria zeylanica, and Drypetes longifolia. There are also palms, such as Fishtail Palm, Borassodendron machadonis, and Rattan, shrubs such as Lasianthus verticillatus (Lour.) Merr., Rinorea horneri Kuntze, Psychotria adenophylla, and Aidia densiflora, vines such as Blue trumphet vine, Lasiobema pulla , Ancistrocladus tectorius, Poikilospermum suaveolens Merr., Scindapsus cuscauria, and Ficus altissima Blume, as well as ground plants that included Chassalia curviflora, Phyllanthus roseus, Catathea, Molineria latifolia, Bolbitis virens, Pandanus obovatus, Taenitis blechnoides, and Livistona saribus.

          The Beach Forest consists of plants such as Hernandia nymphaeifolia (Presl) Kubitzki, Alexandrian laurel (Calophyllum inophyllum L.), Cerbera odollam, Australian Pine, fish poison tree, Hibiscus tiliaceus L., Guettarda speciosa L., Colubrina asiatica (L.) Brongniart, Premna collinsae Craib, Volkameria inerme, Scaevola taccada (Gaertn.) Roxb., Acrostichum aureum L., Pandanus tectorius, and Ischaemum muticum L..

         The mangrove swamp forest consists of large-leaved and small-leaved mangroves,as well as Black mangrove. Plants found include Xylocarpus spp., Sonneratia griffithii Kurz, Cerbera odollam, and epiphytic plants like Kratae Tai Mai and orchids.

The fertile forest is a habitat for many kinds of wildlife, especially birds, of which more than  80 species are found in the Mu Ko Surin National Park. These include the Common Hill Myna, Pied Imperial Pigeon, Greater Racket-Tailed Drongo, and the rare Nicobar igeon, Pacific Reef Heron, as well as more common birds such as seagulls, and Brahminy Kite.

         The forest animals found are the Southern Pig-Tailed Macaque, squirrels, Mouse Deer, monitor lizards, pythons, Lyle's Flying Fox, and various types of bats.

         The coral reef at Mu Ko Surin is a fringing reef that is home to common corals that include the Cauliflower Coral, Staghorn Coral, Mountain Coral, Finger Coral, Mushroom Coral, Galaxy Coral, Tabulate Coral, Lettuce Coral, Brain Coral, Disc Coral, Fire Coral, Sea Anemones, soft corals, and sea pens.

          In addition to the hard corals that are commonly seen, there are also three types of seagrasses found in the bay area of Mu Ko Surin, namely Halophila ovalis, Halodule pinifolia, and Thalassia hemprichii. Other aquatic animals include sponges, sea worms, lobsters, shrimps, crabs, mollusks, squids, sea stars, brittle stars, feather stars, sea urchins, and barnacles. The fish species found include: Streaked Spine Foot, wrasses, Butterfly Fish, Angel Fishes, Parrot Fish, Serranidae, Sea Goldie, Surgeon Fish, Moorish Idol, Ray-Finned Fish, Combtooth Blennies, Sea Goby, Lion Fish, Estuarine Stonefish, Sea Bass, Horseface Loach, Painted Sweetlips, Two-Lined Monocle, Hardtail Scad, Shark Catfish, Selar, Trigger Fish, and Puffer Fish. Rare marine species include Whale Sharks, whales, Leatherback Sea Turtles, Green Sea Turtles, Hawksbill Turtles, and Olive Ridley Sea Turtles.