Scombrotoxin (histamine) poisoning is a leading seafood safety concern for tunas and related species. FDA requires that importers have HACCP plans addressing time-temperature control from catch through distribution. Shipments found to have temperature abuse in their history can be detained or refused entry, making cold-chain documentation a compliance priority.

Dolphin-safe labeling under the Marine Mammal Protection Act is voluntary but commercially significant — many US retailers and foodservice buyers require it. To use the label, importers must obtain a written statement from the vessel captain and, for certain fishing methods in specific ocean areas, an independent observer certification. Consult a licensed customs broker or trade counsel for current documentation requirements.