San Diego Harbor Excursions (Whale Watching), San Diego

Address 1050 North Harbor Drive, San Diego, CA 92101 Map, Tel 619-234-4111, Website

From Mid-December to mid-March, thousands of California gray whales pass by San Diego on their annual southern migration. Trained naturalists from the Birch Aquarium lead three-and-a-half hour cruises, and you're very likely to see whales, dolphins, harbor seals and sea lions). If you don't see a whale, you can ride again for free.