Humpback whales have been spotted in Boston Harbor and a new video shows just how much fun they're having in the local waters.

The warmer weather this summer has brought five or six humpback whales into Boston Harbor. And though there have been several sightings of the massive mammals, some of the first video has finally emerged.

As you can see from the footage, shared by Boston Harbor Islands National and State Park on Facebook, the whales were having a good time breaching in the harbor waters earlier this week.

It's a short video, but it is pretty cool.

And if you had the volume up as you watched, you can tell onlookers capturing the video were pretty impressed too.

The Boston Globe has reported on these whale sightings and have learned that five or six individual whales have been identified and they are most often spotted swimming miles offshore near Boston Light. They have been seen between Deer Island and Spectacle Island as well.

That puts them at about a quarter-mile from downtown Boston...kind of crazy.

Of course video like this may lead to more people boating in the area these whales are swimming, but the Coast Guard is urging boaters to take "extreme caution."