A Lake
moleque
A large protected body of water
A body of water that is protected from the ocean by an arm of land is called a harbor. You will often find harbors within a gulf or in a bay.
That would be called a Lagoon.
A "bay" is a small protected body of water that is a four-letter word.
A harbour.
Towns and cities are often located by a body of water because it either protected them or fed them.
vertical movement of a body of water called
natural harbours
It is protected by the skull
Bay