Sea fishing in the Mediterranean is exceptional for Bluefin Tuna with the best time of year being mid-March to beginning of June and mid-July to mid-November. Bluefish are caught year round and Little Tunnys can be caught mid-April to late October. A Mediterranean variant of the common mackerel also provides top sport from mid-April to mid-November. You will also find Sea Bass from mid-April to mid-October and Mahi Mahi (Dorado) from mid-August to mid-November.
Chartered fishing with experienced skippers, who know the local waters well, offers the best chance of success. All the necessary equipment, including fishing rods, bait, and tackle are supplied and they will take you to the best fishing spots.
For further information on Spain:
https://anglersworld.tv/sea-fishing/spaininformation/