Manzanillo is well known for its sportfishing. The daily catch includes marlin, sailfish, dolphin fish and manta ray. Charters departing from the marina at Las Hadas can be easily arranged. An international tournament each February draws competitors from around the world.

Competitive and devoted fishermen should plan their trips to Manzanillo for late November or early February when the International Sailfish Tournament takes place. During the event, some sports fishermen bring in as much as 100 marlin per day, and prizes include cars, plane tickets and the like. The cost to enter is approximately $430, which includes a celebratory awards dinner at the end of the competition.