Splash Sale! For a limited time, Hornblower’s Whale & Dolphin Watching Adventure Cruise Tickets are only $30 per person for Monday through Friday cruises (a savings of $15 per person)! Call (619) 686-8715 to reserve. Our Whale Watching Season featuring migrating Gray Whales lasts through April 19, 2020. Must purchase a specific cruise date with this offer. Offer not valid with any other discounts. Must book by Jan 31, 2020.