Costco’s frozen seafood section is more than bulk convenience; it’s full of flavor, value, and quality. From sushi-grade tuna to pub-style cod, these freezer finds rival restaurant meals while keeping budgets in check.
Whether you’re meal-prepping, entertaining, or craving comfort food, here are 19 frozen seafood items at Costco that prove frozen doesn’t mean second best.
1. Kirkland Wild-Caught Sockeye Salmon
Costco’s sockeye salmon is the star of the frozen seafood section. It’s flash-frozen right after being caught, so it tastes more like something you’d order at a restaurant than what you’d usually grab at the grocery store.
Rich in flavor, loaded with omega-3s, and super versatile, it’s proof that Costco’s freezer foods can be top-notch quality.
2. Argentine Red Shrimp
These aren’t your typical shrimp. Wild-caught Argentine reds have a natural sweetness and a texture that’s closer to lobster, which is why chefs love them.
They cook up in just a few minutes and add a fancy touch without the fancy price tag. Toss them into pasta or sizzle them in garlic butter, and dinner instantly feels special.
3. Tempura Shrimp
Costco’s tempura shrimp is a fan favorite, and it’s easy to see why. The batter fries up light and crispy, tasting just like takeout. All you have to do is pull it straight from the freezer and pop it in the air fryer.
It’s great for appetizers, late-night snacking, or game-day spreads. It’s comfort food that delivers restaurant crunch without any hassle.
4. Mahi-Mahi Fillets
If you’re trying to keep things healthy, Costco’s mahi-mahi is a solid pick. It’s lean, packed with protein, and low in mercury. The mild flavor makes it super versatile, meaning that it’s perfect for tacos, curries, or just throwing on the grill.
It’s a reminder that Costco’s freezer section isn’t just about comfort food; it’s great for clean eaters and meal preppers too.
5. Wild-Caught Alaskan Cod
Costco’s wild Alaskan cod isn’t just delicious; it’s a feel-good buy. Certified by trusted eco-labels, it supports sustainable fishing and healthy oceans.
On top of that, it’s super versatile, whether you’re craving classic fish and chips, a baked dinner, or a hearty soup. It’s tasty, practical, and good for the planet.
6. Panko-Breaded Tilapia
Not all frozen seafood has to be fancy. Sometimes it’s just about getting dinner on the table. Costco’s panko-crusted tilapia is mild, kid-approved, and even picky eaters dig it.
Just bake and serve it for a quick family meal that’s cheaper (and easier) than takeout. It’s classic Costco: big portions, little effort, and a win for busy nights.
7. Scallops
Scallops are one of those seafoods people insist you have to buy fresh, but Costco’s frozen version makes a strong case otherwise. These big sea scallops sear up perfectly, turning golden with that rich, buttery sweetness everyone loves.
Plus, buying in bulk makes them way more affordable. Try them once, and you might rethink what frozen seafood can be.
8. Langostino Tails
Langostinos are one of Costco’s best-kept freezer secrets. Small, sweet, and kind of like mini lobsters, they’re the ultimate upgrade for pastas, seafood salads, or even mac and cheese.
Since most stores don’t carry them fresh, finding them in bulk at Costco is a win, especially for home cooks who want something fancy without overspending.
9. Everything-Crusted Cod Portions
These cod fillets feel a little too trendy to be hiding in Costco’s freezer, but they’ve built a loyal fanbase. Covered in a crunchy “everything bagel” crust, they’re an easy weeknight dinner, and they taste great.
The mix of sesame, garlic, and tender fish just works, showing that frozen seafood doesn’t always need thick breading to impress.
10. Ahi Tuna Steaks
Sushi-grade tuna from Costco? Yes, really. These frozen steaks are deep red, meaty, and ideal for searing rare or chopping into poke bowls, which is a freezer hack that surprises even seasoned foodies.
At a fraction of restaurant prices, you can pull off sushi night at home without any chef skills.
11. Alaskan Halibut
Halibut hits that sweet spot between delicate and firm, making it perfect for dinner parties. Costco’s wild Alaskan halibut is sustainably certified, so you’re supporting the oceans while getting awesome fish.
Its flaky texture and subtle sweetness make chefs happy, and now you can grab it in bulk. It’s a sustainable splurge that proves Costco can do more than just bargain buys.
12. Beer-Battered Cod
Craving fish and chips without leaving home? Costco’s beer-battered cod is the answer. Crispy, golden, and full of pub-style comfort, it pairs perfectly with fries or slaw for an easy weeknight meal.
It’s hearty, indulgent, and no-fuss, and it’s the kind of frozen good that appeals to everyone, proving Costco’s freezers are full of crowd-pleasing hits.
13. Crab Cakes
Costco crab cakes spark debate: some say they’re too bread-heavy, others swear by them as a lifesaver. Either way, they’re tasty, filling, and perfect for dinner parties when you want to impress without the hassle.
Pre-portioned and ready to bake, they might not beat Maryland’s best, but they’re a dependable, satisfying shortcut.
14. Smoked Salmon Portions
Costco makes smoked salmon easy with individually wrapped portions. Whether it’s for bagels, breakfast spreads, or charcuterie boards, serving is simple and nothing goes to waste.
The salmon stays rich, smoky, and tender, keeping that premium taste. For regular brunches or hosting guests, this is a clever hack that shows Costco knows convenience.
15. Lobster Tails
Costco does sell frozen lobster tails, and they’re totally worth it for special occasions. Sweet, meaty, and perfectly sized, they turn a home-cooked meal into a steakhouse-worthy feast.
Even with the price, they’re usually way cheaper than dining out. A little garlic butter, and suddenly Valentine’s Day, anniversaries, or any treat-yourself dinner feels fancy, all from your own kitchen.
16. Fish Sticks
Costco’s fish sticks are childhood nostalgia at its best. Coming in huge, value-packed boxes, they’re perfect for quick lunches or after-school snacks.
Crispy on the outside, tender on the inside, and practically guaranteed to please kids, they’re not gourmet, and that’s the point. Costco isn’t just for foodies; it’s for families who need easy, tasty meals too.
17. Mussels in Garlic Butter Sauce
Costco’s frozen mussels are a hidden gem most shoppers miss. Pre-seasoned in garlic butter, they steam in minutes, turning into a date-night dish that tastes like fine dining straight from your freezer.
You can serve them with crusty bread and skip the pricey restaurant bill. It’s an easy, impressive meal that proves Costco’s frozen aisle has some awesome surprises.
18. Seaweed Salad Packs
While they’re technically not seafood, these seaweed salad packs live in Costco’s frozen seafood section for a reason. They’re bright, tangy, and just like what you get at a sushi restaurant.
They’re pre-portioned so you can thaw only what you need. Healthy, low-cal, and refreshing, they’re small but rewarding.
19. King Crab Legs
Costco’s king crab legs are the ultimate flex from Costco freezers. They’re huge, meaty, and perfect for holidays or special occasions. They’re a splurge worth every penny.
You can steam them, crack them open, and dip them in butter, and suddenly dinner feels like an event. Few things say “feast” better than these giant claws.