A strait is a naturally formed, narrow, navigable waterway that connects two larger bodies of water. Examples include the Palk Strait (connects Bay of Bengal to Indian Ocean) and the Bering Strait (connects Pacific to Arctic). A bay is a waterbody partially enclosed by land, a peninsula is a landmass surrounded by water on three sides, and an isthmus (misspelled as 'Isthamus' in the option) is a narrow strip of land connecting two larger land areas.