Size and/or shape. A gulf is bigger than a bay (e.g. compare the Gulf of Mexico to Tampa Bay), and a sound is more about the opening to the larger body of water than it is about the partially-enclosed body of water itself.
In regards to the pictures a gulf seems to be a coastline fed by a river. A bay being a mostly round coastline and a wound being a small coastline that gets bigger.
What’s the difference between a gulf, a bay, and a sound?
Size and/or shape. A gulf is bigger than a bay (e.g. compare the Gulf of Mexico to Tampa Bay), and a sound is more about the opening to the larger body of water than it is about the partially-enclosed body of water itself.
Whats the difference between a sea and an ocean
gulf doesn’t always mean bigger than bay. eg the bay of bengal is larger than the gulf of mexico
In regards to the pictures a gulf seems to be a coastline fed by a river. A bay being a mostly round coastline and a wound being a small coastline that gets bigger.