An inlet
A gulf or a bay.
Tidal flow
part of an ocean that extends into the land larger then a bay
A bay.
Straight
a part of ocean or lake that extends inland
A sea a portion of ocean that is enclosed or partly enclosed by land
a peninsula
A sea a portion of ocean that is enclosed or partly enclosed by land
A part of the ocean that extends into the land. * Change the vowel. (4letters all CAPS) Start with GOLF
butt
A gulf. The word is derived from the Old French word "golfe" and the Greek word "kolpos" meaning "bosom, gulf."