Husavik is the whale capital of Iceland and the best company to go with is North Sailing. They have an amazing old wooden sailboat that takes you out on a sail and whale adventure. This is highly recommended!

They also have a silent whale watching tour which is environmentally friendly and minimizes the disturbance to the whales.

Tour availability varies with the season but the only time you won't be able to tour with North Sailing is December - February.