Krill contains long chain omega-3 fatty acids EPA & DHA, as well as phospholipids, choline and astaxanthin. Compared to other sources, krill is one of the most underexploited marine sources of omega-3s on Earth.
This tiny shrimp-like creature is found in all of the world's five oceans, but they only swim in huge swarms around Antarctica
Here’s more on krill.
1) Krill are not fish
Krill are crustaceans, not fish.
So what Is a crustacean? Crustaceans are a very diverse group of invertebrate animals. You are probably more familiar with some other crustaceans – crabs, lobsters and shrimp. The word ‘crustacean’ comes from the Latin word ‘crusta’, which means shell.
2) EPA & DHA
Antarctic krill represent a particularly healthy source of the omega-3s eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These fatty acids are among the most researched nutritional ingredients in the world today, according to the Global Organization of EPA & DHA Omega-3s.
3) No environmental contaminants
Because krill live at the bottom of the food chain, they have a short life cycle, leading to no accumulation of mercury and other toxins.
4) Natural preservation
The astaxanthin found in krill helps naturally preserve its omega-3 fatty acid content. Astaxanthin also contributes to a clean and natural product, as there is no need add further preservational ingredients.
The algae that provide krill’s diet with such a robust source of omega-3s is also the source of the potent antioxidant astaxanthin, which gives krill oil its distinctive red color and, more importantly, acts as a natural preservative to its fatty acids.