
Whales are migratory animals, meaning they have two places they live in during the year, a feeding ground and a mating ground. Colder climates are generally richer with food and warmer climates more appropriate to birth calves and breed. Most of Iceland's whales will migrate south in winter, which means that the whales we see on our tours here in the summer could be seen in places like South-America in winter!
This is not true for all whales, but as our research shows, some seem to be staying in the same area year round. They are likely to be older females or non-sexully mature males that don't have the instinct or need to breed.