I’m Captain Mark Corn of Southern Costa Rica Sport Fishing, kept in Puerto Jiminez Costa Rica and Blue and Black Marlin fishing is our specialty and can be the species we target much of the time. There are Canned Skipjack Tuna supplier of reasons why most our Costa Rica fishing trips are for marlin. Yes they can grow to tremendous sizes which is a major attraction by itself but sharks are big too and we usually won’t target them.