For those of you who don't know, that map is taken from epic novel by George RR Martin, a Song of Ice and Fire. Anyway, this is the definition: Bay : a body of water partially surrounded by land. Gulf : bay's bigger brother. Strait : naturally formed, narrow but navigable waterway that connects two larger bodies of water. read more
Examples: -Bay of Bengal, Hudson Bay. There is a very little difference between Gulf and bay..A gulf is a larger waterbody than Bay but has a mouth which is narrow than Bay. Examples: -Persian Gulf. A Strait is a naturally formed, narrow, typically navigable waterway that connects two larger bodies of water. read more
Gulf and strait are two terms that are often discussed when it comes to geography. As gulfs and straits are both common features in seafaring it is easy to confuse these two words. read more
One difference between a bay and a gulf is size: bays are typically smaller than gulfs. A gulf may contain one or several bays, such as the Galveston Bay and Tampa Bay, which form part of the Gulf of Mexico. read more