Major Bays and Gulfs in Asia: From Tokyo Bay to the Bay of Bengal

Asia's vast coastline features numerous significant bays, gulfs, and straits that shape regional geography, climate, and economies. Here are the most prominent (excluding non-Asian entries like Hudson Bay):

Major Bays and Gulfs

• Bay of Bengal – World's largest bay (2.17M km²); bordered by India, Bangladesh, Myanmar, Sri Lanka; fed by Ganges-Brahmaputra, Irrawaddy, Mahanadi.
• Gulf of Thailand – Shallow inlet of South China Sea; bordered by Thailand, Cambodia, Vietnam, Malaysia; key for fisheries, tourism, oil/gas.
• Gulf of Tonkin – NW South China Sea; bordered by Vietnam, China (Hainan); strategic shipping lane, fisheries.
• Bohai Bay / Bohai Sea – Innermost gulf of Yellow Sea; surrounded by China (Beijing, Tianjin, Hebei, Liaoning, Shandong); major ports (Tianjin, Dalian), oil fields.
• Tokyo Bay – Deep, sheltered bay on Honshu's SE coast; heart of Greater Tokyo (37M people); major ports (Tokyo, Yokohama, Chiba).
• Palk Bay / Palk Strait – Between India (Tamil Nadu) and Sri Lanka (Northern Province); shallow, rich in marine life; Adam's Bridge (Rama Setu) crosses it.
• Mannar Bay – NW Sri Lanka, between mainland and Mannar Island; part of Gulf of Mannar Biosphere Reserve (dugongs, coral reefs).

Key Straits (Often Grouped with Bays)

• Taiwan Strait – 180 km wide; separates Taiwan from mainland China; critical global shipping lane.
• Malacca Strait – Between Sumatra (Indonesia) and Malay Peninsula; world's busiest strait (~25% global trade).
• Sunda Strait – Between Java and Sumatra; volcanic (Krakatoa).
• Lombok Strait – Between Bali and Lombok; deep, strong currents (Indonesian Throughflow).

Marginal Seas Functioning as Large Bays

• Yellow Sea – Between China and Korean Peninsula; shallow, productive fisheries.
• East China Sea – Between China, Japan, Taiwan; East China Sea Basin resources.
• South China Sea – Semi-enclosed; disputed claims; vital shipping, fisheries, hydrocarbons.

These water bodies drive monsoons, fisheries, trade routes, and geopolitics across Asia.