Drop anchor in Mexico’s biggest commercial port on Carnival cruises to Manzanillo. Don’t let the business bustle of this Pacific coast city fool you — Manzanillo, Mexico is a classic seaside resort at heart. With a pair of gently curving bays, Manzanillo is flush with long golden beaches for snorkeling, swimming and siestas. Battle magnificent sailfish in Mexico’s fishing capital, or scuba dive with eagle rays when you cruise to Manzanillo.