Blue whales are a rare species to see around the islands of Madeira. They are the largest whale and the biggest animal ever to life on the planet. When we do encounter them it is during the spring when the Atlantic population of Blue whales is known to be migrating north. During the winter their population of 1-3,000 whales transits south towards warmer seas for mating and calving. We typically observe them on the northern migration heading towards cooler oceans and their feeding grounds.