Water Spout ????

[Van]

Coming back from fishing yesterday I was in-between some Boston harbor islands. Clear skies, some wind with some chop in the seas. I see what I thought was a boat rooster tail, but as I got close there were no boats there. Just this kinda of spray of water. I did not go very high, and then it just collapsed. When I boated over the spot there was nothing.

I guessed it was water spout (what else?), but absolutely clear skies and just not much wind. It does not make sense. It was on the landing path to Logan so there were some planes passing over that area. So could the draft of big jet do that? In that area they are still pretty high up, not close to landing yet.
Still, I've been even closer to landing planes near the Harbor and never saw anything like this.

I happened too fast to get a pic, but an internet search I found an image of what it looked like. But what I saw was much smaller than the one in the pic.

BUT....
How can this happen on a clear day??
WTH is going on?
and don't blame Obama.