What is this thing?

Here are more pics

A buddy and I were riding our jet skis to Chesapeake and Delaware canal.

There are a series of these towers in the water. The have lights at the top that made me think the towers are associated with an airport, I don’t know if any airport is near there.

My first thought was, it was just a cell tower, but then the fact there’s like a series of them in the line, maybe go kind-of X-Fileish about them.