Spotting a humpback whale as it crests the surface of the ocean is an awe-inspiring sight, and Puerto Vallarta is one of the best places to do just that. Keep in mind that prime whale-watching season runs from early December to late February or early March, when humpback whales congregate in the warm waters of Puerto Vallarta's Banderas Bay to have their babies. And although you can bring your binoculars and look for whales from the shore – try the Malecon – your best chance for seeing them up close is aboard a tour operator's boat. 

Wildlife Connection is a traveler-recommended operator, offering half-day whale- and dolphin-watching tours, starting at $72 for adults and $48 for kids (if booked online). Along with a bilingual guide, Wildlife Connection also serves their guests bottled water and lunch. Ocean Friendly Whale Watching Tours also receives a lot of praise for its knowledgeable tour guides, who also moonlight as marine scientists. Recent travelers said they had such a good experience that they plan on returning soon. It offers half-day tours, starting at $139 for adults and $129 for kids.