Pacific Ocean width at about 5°N latitude, where it stretches approximately from Indonesia to the coast of Colombia—halfway around the world, and more than five times the diameter of the Moon. The lowest known point on Earth—the Mariana Trench—lies below sea level. Its average depth is , putting the total water volume at roughly . Due to the effects of plate tectonics, the Pacific Ocean is currently shrinking by roughly per year on three sides, roughly averaging a year. By contrast, the Atlantic Ocean is increasing in size. Along the Pacific Ocean's irregular western margins lie many seas, the largest of which
Ethnic groups in the Philippines culture and language. In the late 19th century. The Philippines has over 180 indigenous ethnic groups, over half of which represent unique linguistic groups. There are more than 100 highland, lowland, and coastland tribal groups in the Philippines. These include: The Philippines consists of a wide number of settlers that form part of the national population. They immigrated or descended from various countries, most notably Japan, Spain, China, India, and the United States. Ethnic groups in the Philippines The Philippines is inhabited by more than 175 ethnolinguistic nations, the majority of whose languages are Austronesian in origin, then Han Chinese,