How to Ship Seafood & Fish: Perishable Cold Shipping

Seafood is one of the most perishable foods you can ship — salmon, lobster, and shrimp can spoil within hours at room temperature. Successful seafood shipping requires overnight transit, appropriate cooling (dry ice or gel packs), and proper USPS/carrier hazmat compliance for dry ice shipments.

Best Carrier

FedEx Priority Overnight or UPS Next Day Air

Package Type

box

Typical Weight

3-20 lbs

Shipping Tips for Seafood & Fish

Fresh raw seafood requires overnight shipping only — do not ship via 2-day ground services
Dry ice is the preferred cooling medium for most fresh seafood — it maintains lower temperatures longer than gel packs
Dry ice is classified as a hazardous material (UN 1845) — packages must be marked with a dry ice label and weight, and cannot be shipped via USPS
Use EPS foam coolers inside a cardboard outer box, with dry ice on top of the sealed seafood (cold air falls)
Gel packs alone work for cooked seafood, smoked fish, or short overnight transits in cool weather

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Reference Number

Scannable Code (from Reference Number)ⓘ

Encodes the Reference Number above as a real, scannable code. Not a carrier tracking barcode — use for your own order IDs, SKUs, or RMA numbers.

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Shipping Seafood & Fish FAQ

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Related Resources

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