The shipping part of the question is a little fuzzy.
PART 635—ATLANTIC HIGHLY MIGRATORY SPECIES
Subpart F—Enforcement
§ 635.71 Prohibitions.
(27) Possess a large medium or giant BFT, after it has been landed, that does not have a dealer tag affixed to it as specified in §635.5(b)(2)(ii), unless the BFT is not to be sold and has been reported per the requirements specified in §§635.5(a)(3) or 635.5(c).
(29) Land, transship, ship, transport, purchase, sell, offer for sale, import, export, or have in custody, possession, or control:
(i) Any fish that the person knows, or should have known, was taken, retained, possessed, or landed contrary to this part, without regard to the citizenship of the person or registry of the fishing vessel that harvested the fish.
(ii) Any fish of a species regulated pursuant to a recommendation of ICCAT that was harvested, retained, or possessed in a manner contrary to the regulations of another country.