Aquaculture-raised shellfish — including oysters, clams, mussels, shrimp, and similar bivalves and crustaceans — are subject to FDA prior-notice requirements and may be sampled for microbial contamination, biotoxins, and chemical residues at US ports of entry. Farmed shrimp in particular has faced antidumping duty orders from multiple source countries, making classification and origin documentation critical for accurate duty calculation. Buyers sourcing farmed bivalves should also verify that the foreign growing area holds an approved classification under the National Shellfish Sanitation Program (NSSP) or an equivalent bilateral agreement. Consult a licensed customs broker or FDA-registered importer of record to confirm admissibility requirements for specific species.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.