Nearshore fishing options in Colombia include Medellin and Cartagena. In Medellin, you can target Roosterfish and Tarpon, with the best season being from October to December. Cartagena is another popular destination for nearshore fishing, where you can catch Barracuda, Snapper, Grouper, Jack Crevalle, and King Mackerel. These trips are suitable for beginners and families, as they stay within 10 miles of shore and offer plenty of fish-catching opportunities.