Question

Is of the bay a prepositional phrase

Answer 1

Yes it is. The way I learned it in grade school was to think of, what can the bee do to the jar? The bee can fly above, to, through, beside, below, through, around, and somehow, of works too. It never entirely made sense how 'of' could be used in such a sentence but it is indeed grammatically correct.

Answer 2

Yes ( I think )

Step-by-step explanation:

A prepositional phrase oftentimes refers to a phrase that refers to an object's position.

Or in more correct terms;

"A modifying phrase consisting of a preposition and its object."

- Oxford languages

"Of the bay"

has an object; presumably the 'bay' and has a preposition 'of'

The sentence "of the bay" refers to a relationship between a noun or pronoun (the bay) and its position (of)

So, yes.