Seagulls But No Sea

Here's one for the books. 

The part of Massachusetts where we live is about two to three hours away from the ocean.

However, in a parking lot of a town where I recently did some shopping, there were numerous seagulls in the parking lot of a little shopping center!

Sad to say, there was a big fast food place nearby and people were feeding the birds pieces of their fries and buns. 

All I could think of was how unhealthy that diet was for the birds (as well as the people).

DOES ANYONE KNOW WHY SEAGULLS WOULD LIVE FAR AWAY FROM THE SEA?