The answer is a bay. It is similar to a gulf but generally is smaller than a gulf.
sea
nestle
Sound
delta
A portion of ocean that is enclosed or partly enclosed by land? ✓ sea
A sea a portion of ocean that is enclosed or partly enclosed by land
A sea a portion of ocean that is enclosed or partly enclosed by land
bay
a portion of an ocean or sea partly enclosed byland
Either gulf or a sea
Bay, gulf or lagoon.
a body of water