query: located_on_terrain_feature ko kham
supports: Bangkok is the capital and most populous city of Thailand. It is known in Thai as "Krung Thep Maha Nakhon" (pronounced ) or simply . The city occupies in the Chao Phraya River delta in Central Thailand, and has a population of over 8 million, or 12.6 percent of the country's population. Over 14 million people (22.2 percent) live within the surrounding Bangkok Metropolitan Region, making Bangkok an extreme primate city, significantly dwarfing Thailand's other urban centres in terms of importance. There are 581 high-rise buildings in the city, ranking number 5 in the world. Lake Island is an island on the coast of the Canadian province of British Columbia. It is located between Mathieson Channel and Lady Trutch Passage, and is flanked by Dowager Island (to the northwest), Lady Douglas Island (to the west), and a long finger shaped peninsula of the Canadian mainland to the east. Ironically, Lake Island is not a lake island, as it is in an inlet of the Pacific Ocean, and lies only some 6 kilometres from the open sea. Thailand (or  ), officially the Kingdom of Thailand, formerly known as Siam, is a country at the centre of the Indochinese peninsula in Southeast Asia. With a total area of approximately , Thailand is the world's 51st-largest country. It is the 20th-most-populous country in the world, with around 66 million people. The capital and largest city is Bangkok. A continent is one of several very large landmasses on Earth. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in size to smallest, they are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. In geology, areas of continental crust include regions covered with water. An archipelago, sometimes called an island group or island chain, is a chain, cluster or collection of islands. The word "archipelago" is derived from the Greek "-  arkhi-" ("chief") and "  pélagos" ("sea") through the Italian "arcipelago". In Italian, possibly following a tradition of antiquity, the Archipelago (from medieval Greek "*" and Latin "archipelagus") was the proper name for the Aegean Sea and, later, usage shifted to refer to the Aegean Islands (since the sea is remarkable for its large number of islands). It is now used to refer to any island group or, sometimes, to a sea containing a small number of scattered islands. Cambodia (or Kampuchea ), officially known as the Kingdom of Cambodia (Preh Réachéanachâk Kâmpchéa), is a country located in the southern portion of the Indochina Peninsula in Southeast Asia. It is in area, bordered by Thailand to the northwest, Laos to the northeast, Vietnam to the east, and the Gulf of Thailand to the southwest. The Philippines, officially the Republic of the Philippines, is a sovereign island country in Southeast Asia situated in the western Pacific Ocean. It consists of about 7,641 islands that are categorized broadly under three main geographical divisions from north to south: Luzon, Visayas, and Mindanao. The capital city of the Philippines is Manila and the most populous city is Quezon City, both part of Metro Manila. Bounded by the South China Sea on the west, the Philippine Sea on the east and the Celebes Sea on the southwest, the Philippines shares maritime borders with Taiwan to the north, Vietnam to the west, Palau to the east and Malaysia and Indonesia to the south. Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity. Chanthaburi (Chong: , "chankabui", lit: "Lady Chan, Who wear a pan on her head") is a province ("changwat") of Thailand. It is in the east of Thailand, on the border with Battambang and Pailin of Cambodia and on the shore of the Gulf of Thailand. Neighbouring provinces are Trat in the east and Rayong, Chonburi, Chachoengsao, and Sa Kaeo to the west and north. Ko Mak is a small island of Trat Province, Thailand. The island is named after the Areca nut (). Ko Kham ( Thai :  ) is a small island near Ko Mak , on Trat Province , Thailand . It can be reached with a sea kayak from Ko Mak or by walking during low tide . Ko Kham has nice places to snorkel , depending on the direction of wind . Especially the south beach has a calm sea , nice sand dune , black lava rocks with shells and crabs ( or crayfish or shellfish ) . Near rocks , you may see ( or swim over ) black sea urchins that have 15 - 30 cm radius and many thin black spines about 30 - 50 cm long . Locals say that the spines contain small needles and poison : if one touches the spines and gets the needles , the needle should be crushed with a rock . The poison is only irritating and not lethal . In Thai , the name is hoi men (  ) . A cay (or ), also spelled caye or key, is a small, low-elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic and Indian Oceans (including in the Caribbean and on the Great Barrier Reef and Belize Barrier Reef). The areca nut (or ) is the seed of the areca palm ("Areca catechu"), which grows in much of the tropical Pacific (Melanesia and Micronesia), Southeast and South Asia, and parts of east Africa. This seed is commonly referred to as betel nut so it is easily confused with betel leaves that are often used to wrap it (paan). The term areca originated from a South Asian word during the 16th century, when Dutch and Portuguese sailors took the nut to Europe.
  Consumption has many harmful effects on health and is carcinogenic to humans. Various compounds present in the nut, most importantly arecoline (the primary psychoactive ingredient which is similar to nicotine), contribute to histologic changes in the oral mucosa. As with chewing tobacco, its use is discouraged by preventive efforts. Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies near the intersection of geological plates, with heavy seismic and volcanic activity. Southeast Asia consists of two geographic regions: The Gulf of Thailand, formerly the Gulf of Siam, is a shallow inlet in the western part of the South China and Eastern Archipelagic Seas, a marginal body of water in the western Pacific Ocean. The gulf is around 800 km (497 mi) long and up to 560 km (348 mi) wide, has a surface area of 320,000 km (123,553 sq mi) and is surrounded on the north, west and southwest by Thailand, on the northeast by Cambodia and Vietnam. The South China Sea is to the southeast. An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, e.g. the Philippines. Trat is the easternmost province ("changwat") along the Thai coast. It has borders with Chanthaburi Province to the northwest, Cambodia to the east, and the Gulf of Thailand to the south. Trat is 315 km from Bangkok.
candidates: aegean sea africa antarctica australia british columbia cambodia caribbean chao phraya river china coast earth europe gulf of thailand mainland north america pacific ocean philippine sea river delta south asia south china sea southeast asia thailand
answer: gulf of thailand