Krill Oil vs Calanus Oil: What Sets Them Apart?

If you’re hunting for an omega‑3 boost, you’ve probably seen both krill oil and calanus oil on the shelf. They look similar, but they work quite differently. Below we break down the most important factors so you can pick the one that fits your lifestyle.

Source and Sustainability

Krill are tiny crustaceans that live in the cold waters of Antarctica. The industry harvests them by filtering seawater, a method that usually leaves the ocean ecosystem intact when done responsibly. Calanus oil comes from Calanus finmarchicus, another small marine creature found in North Atlantic currents. Because both species are low on the food chain, they reproduce fast, making them more sustainable than traditional fish oils.

Omega‑3 Profile and Absorption

Krill oil carries its EPA and DHA bound to phospholipids. This form mimics how your body naturally stores fats, which can improve absorption. Studies show a higher percentage of omega‑3 reaches the bloodstream compared with standard fish oils.

Calanus oil also uses phospholipid delivery, but it’s packed with a special fat called Omega‑3 phospholipids plus a unique antioxidant called astaxanthin. Astaxanthin gives calanus oil its reddish hue and adds extra protection against oxidative stress.

In practical terms, both oils are well absorbed, but many users report feeling the benefits of krill oil slightly faster because of the phospholipid structure. Calanus oil’s added astaxanthin can be a bonus if you’re looking for an antioxidant boost.

Taste, Smell, and Dosage

Krill oil has a mild marine flavor that some people find “fishy.” Most manufacturers coat capsules to mask it, but the scent can still leak when opened. Calanus oil is often described as having a nutty or earthy taste, which many consider more pleasant.

Typical daily doses are 1–2 grams for krill oil and about 0.5–1 gram for calanus oil because of its higher EPA/DHA concentration per capsule. Always check the label for exact EPA/DHA amounts rather than just total oil weight.

Price and Availability

Krill oil tends to sit in the mid‑price range, partly due to the harvesting process and packaging requirements. Calanus oil is newer on the market, so it can be a bit pricier per gram of EPA/DHA, but some brands offer bulk discounts.

If cost is a big factor, compare the actual EPA/DHA content rather than the price per bottle. You might find a cheaper krill brand that delivers the same omega‑3 levels as an expensive calanus product.

Which One Should You Choose?

The right pick depends on what matters most to you:

• Absorption speed: Krill oil may edge out a little.
• Antioxidant boost: Calanus oil’s astaxanthin adds extra protection.
• Taste and smell: If you dislike “fishy” capsules, calanus is gentler.
• Sustainability: Both are good choices, but look for certifications like MSC or ASC.
• Budget: Compare EPA/DHA per dollar rather than total oil weight.

Whichever you pick, stick to the recommended dosage and pair it with a balanced diet. Consistency beats occasional mega‑doses every time.

Now that you know the basics, try one for a month and see how you feel. If you notice better joint comfort, clearer skin, or steadier mood, you’ve probably found your match.