with whale sharks; a baby olive ridley turtle; spotted dolphins costco connection puerto vallarta and riviera nayarit located in the state of jalisco puerto vallarta and banderas bay offer generally calm waters and a number of special chances to experience sea life whale-watching season in puerto vallarta is a winter and early spring through march other inhabitants of banderas bay the water and swim with them farther north of puerto vallarta but relatively secluded riviera nayarit with almost 200 miles of coastline you'll discover the prime breeding june to december you'll also have a number of chances spot whales in both sayulita and rincón de guayabitos between december and mid-march costco travel offers mexico vacation cars and hotel- only options for destinations in the united states and around the world costcotravel.com or sea turtle estuary another hidden gem of los cabos is the 345-acre estuary of san josé del cabo which was designated a state ecological reserve in 1994 and is untouched by hotel the process of hatching but distance from this estuary is a the organization for sustain- during turtle hatching season conservation as they release you can not only witness