Where is the best place to go whale watching?

I am an avid whale watcher who has been on hundreds of whale watches. There are many places in the world that are good for watching whales. I live in Massachusetts and there are many whale watches that travel pretty close to shore to Stellwagon Bank which is a summer feeding grounds for many species of whales (especially humpbacks which is what whale watchers want to see).

There are whale watches in Boston, but from my experience the best trip is from Gloucester MA (about 45 min north of Boston).