Lobster vs Salmon Omega-3: Which Is Better for Your Health?

Salmon has the reputation. You know the drill — eat your fatty fish twice a week, get your omega-3s, protect your heart. It’s drilled into us by every nutrition headline from here to the American Heart Association. And that reputation is well earned. Salmon is legitimately one of the healthiest foods you can eat.

But here’s what nobody tells you: lobster is quietly one of the best sources of marine omega-3s that most people completely overlook. It’s not flashy about it. It doesn’t have the marketing. But when you actually run the numbers, the comparison between these two is more interesting than you’d expect.

By the end of this article, you’ll know exactly how lobster and salmon stack up on omega-3s, protein, vitamins, minerals, and overall nutritional value — and when you should pick each one.

Omega-3 Content: The Numbers

Let’s start with the main event. Omega-3 fatty acids, specifically EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), are the forms that actually matter for human health. Here’s how they compare per 100 grams (about 3.5 ounces) of cooked meat:

• Wild salmon (cooked): 1,500 to 2,500 mg of combined EPA and DHA
• Lobster (cooked): 200 to 300 mg of combined EPA and DHA

There’s no way around it — salmon has more omega-3s per serving. A lot more. If your primary goal is maximizing omega-3 intake in the fewest calories, salmon is the clear winner.

But here’s the thing: 300 mg of combined EPA and DHA is still a meaningful amount. The FDA recommends a daily intake of about 250 to 500 mg of EPA and DHA for general health. A single lobster serving gets you most of the way there. Two lobster servings in a day, and you’ve hit the target without eating any other seafood.

Compare that to chicken or beef, which have virtually zero omega-3s, and lobster suddenly looks like a perfectly respectable source. Not the best, but far from negligible.

The full picture of lobster’s complete nutrition profile shows just how many nutrients it packs into a low-calorie package — the omega-3s are just one piece of a much bigger puzzle.

Fat Content: The Trade-Off

Salmon gets its high omega-3 content from being a fatty fish. That’s good for omega-3s, but it also means more total calories from fat. Here’s the breakdown:

• Salmon: 13 to 20 grams of fat per 100g (of which 2.5 to 4g is saturated)
• Lobster: 0.9 grams of fat per 100g (of which 0.1g is saturated)

Lobster has roughly 5% of the total fat of salmon and virtually no saturated fat whatsoever. If you’re watching your fat intake — whether for weight management, heart health, or because your doctor told you to cut back — lobster gives you meaningful omega-3s with almost none of the fat load.

This also means lobster is more versatile for different cooking approaches. You can steam it, grill it, or eat it cold in a salad without worrying about added fat from cooking. Salmon often needs a little oil just to keep it from sticking to the pan. Lobster? It’s already practically fat-free.

Calories and Protein Density

Here’s where lobster starts to close the gap significantly:

• Salmon: 208 calories per 100g, 20g protein
• Lobster: 98 calories per 100g, 26g protein

Lobster has less than half the calories of salmon and more protein. Per calorie, lobster delivers 26.5 grams of protein per 100 calories versus salmon’s 9.6 grams. That’s nearly three times the protein density.

For anyone focused on body composition — athletes, people in a calorie deficit, or anyone trying to maintain muscle while losing fat — this matters. A 6-ounce serving of lobster gives you about 34 grams of protein for just 165 calories. The same size serving of salmon gives you about 34 grams of protein as well, but at 355 calories. You’re getting the same protein for less than half the calories.

Vitamin B12: Lobster Dominates

If there’s one nutrient where lobster runs away from salmon, it’s B12.

• Lobster: 2.4 mcg per 100g — 100% of the daily value
• Salmon: 3.2 mcg per 100g — 133% of the daily value

Wait — salmon actually has more? Yes, but only slightly, and both are excellent sources. The real story is that both are among the best dietary sources of B12 on the planet. For comparison, a chicken breast has just 0.3 mcg. A beef steak has about 1.5 mcg. Both lobster and salmon are B12 powerhouses that blow land-based proteins out of the water.

If you’re over 50 or follow a mostly plant-based diet with seafood, eating either lobster or salmon regularly will keep your B12 levels where they need to be without any supplements. That said, the higher fat content of salmon means you get slightly more B12 per gram, but lobster delivers its B12 in a much lower-calorie package.

Selenium: The Antioxidant Edge

Both are excellent sources, but there’s a clear winner:

• Lobster: 73 mcg per 100g — 133% of the daily value
• Salmon: 30 to 40 mcg per 100g — 55 to 73% of the daily value

Lobster has roughly double the selenium of salmon. Selenium is a critical antioxidant mineral that supports thyroid function, immune health, and protects cells from oxidative damage. It also plays a role in the body’s detoxification pathways, helping to metabolize certain heavy metals.

This is relevant because both seafoods contain trace amounts of mercury (all seafood does), and selenium actually helps counteract mercury’s toxic effects. Lobster’s exceptionally high selenium-to-mercury ratio makes it one of the safest seafood choices from a heavy metal perspective.

Cholesterol: The Lobster Reputation Problem

We have to address this because it’s the question everyone asks about lobster. Lobster has 95 mg of cholesterol per 100g. Salmon has 55 mg. So salmon wins on cholesterol, right?

Not so fast. As we’ve covered extensively in our comprehensive lobster health guide, dietary cholesterol has minimal impact on blood cholesterol levels for most people. The real driver of blood cholesterol is saturated fat — and lobster has virtually none. Salmon has 2.5 to 4 grams of saturated fat per serving.

If you’re doing the math: lobster’s slightly higher cholesterol is irrelevant because its saturated fat content is near zero. Salmon’s higher saturated fat is a more meaningful factor for heart health than lobster’s cholesterol ever was. The 2015 Dietary Guidelines for Americans removed the cap on dietary cholesterol precisely because the science no longer supports demonizing it.

Mercury and Contaminants

This is one area where lobster has a clear safety advantage. Salmon — especially farmed Atlantic salmon — can accumulate PCBs and other persistent organic pollutants. Wild salmon is better but still carries some risk depending on the source.

Lobster, being a bottom-dwelling crustacean with a relatively short lifespan (compared to large predatory fish), accumulates very low levels of contaminants. The FDA classifies lobster in its “Best Choices” category, recommending 2 to 3 servings per week. Salmon is also in the “Best Choices” category, but concerns about farmed salmon’s contaminant profile are worth noting if you eat it frequently.

The omega-3s in wild salmon likely outweigh any contaminant concerns, but if you’re pregnant, nursing, or feeding young children, lobster’s ultra-low contaminant profile gives it an edge for frequent consumption.

Which One Should You Eat?

Here’s the honest answer: eat both. They have different strengths, and a varied diet is the healthiest diet.

Choose salmon when you want a concentrated dose of omega-3s, you’re meal-prepping for the week, or you want a more affordable way to get marine nutrients. A can of wild salmon costs a fraction of what lobster costs, and it delivers excellent nutrition per dollar.

Choose lobster when you want the highest protein density with the lowest calorie load, you need a B12 or selenium boost, or you want a seafood option with negligible fat and contaminants. It’s also a better choice if you’re counting calories but still want a satisfying protein-rich meal.

The practical reality is that most people won’t eat lobster every day — it’s too expensive for that. But if you’re comparing the two as occasional options, lobster holds its own surprisingly well against the mighty salmon. It delivers meaningful omega-3s, dominates on protein density, and provides superior levels of several critical minerals.

If you do eat salmon frequently, consider adding lobster to your rotation a few times a month. The different nutrient profiles complement each other well, and you’ll get a broader range of vitamins and minerals than eating either one exclusively.

For tracking your omega-3 intake with precision, this home omega-3 test kit lets you check your blood levels from home — useful if you’re optimizing your seafood choices for heart and brain health. We earn a commission if you purchase through our links, at no extra cost to you.

Ready to put this comparison to the test? Buy fresh lobster from Maine and see for yourself how this underrated omega-3 source stacks up against the king of fatty fish.