Deep-sea fishing requires a fishing license, which may be obtained at the Mexican Consulate or at the State Secretary of Tourism, where you may obtain also all the necessary information about restrictions and closed seasons.
Telephones:
Mexican Consulate in Los Angeles, CA. — (213)351-6800
Mexican Consulate in San Diego, CA. - (619)231-8414
State Secretary of Tourism - (011526) 634-6330, 688-0555