The trip I will always remember for. Thank you for one of the best experience of my life.
Not only because we have seen the beautiful humpback whale, could hear its amazing "song" that experience simply unexpectedly made me cry, and that we were lucky enough to see the cute puffins on Puffin island as well, but also because of the entire experience the tour provided.
Our tour guide lady and the captain were really dedicated to bring humans closer to the sea life. (I completely agree with, as some tourists are coming to Iceland to 'taste whale', before even meeting them alive. It would change their mind about the menu for sure.)
The RIB boat it is much more funny than a roller coaster, and the most friendly way to get closer to whales, puffins and other creatures. You will receive all necessary equipment, so you will not get cold, and you do not have to prepare much for the trip.
Surprisingly I really liked the whale museum as well, next to the harbor. Every single human should see the movie about the whales, and also great opportunity to see how our 'new friends' look like (as a whole) thanks to the 'real size' sculptures.