Whale Watching season in Los Cabos traditionally stretches from mid-December through mid-March, and sees an estimated 5,000 to 10,000 whales migrate south to breeding grounds at Magdalena Bay and in the Sea of Cortés. Grays and humpbacks are the most commonly sighted, but lucky visitors can occasionally see blue, sperm, fin and pilot whales, as well as the occasional orca. The annual migration is big business locally, and virtually every local tour boat offers seasonal whale watching excursions. High-speed inflatables provide the best chance for up-close-and-personal looks at these leviathans, but you don't necessarily have to sign up for a tour to enjoy sightings. Whales are often spied from area beaches, as well as coastal hotels, restaurants and golf courses.