Algae are mini-plants that can make their own Omega-3 fatty acids in water. In nature, algae pass these on to 'fatty' fish such as herring and sardines when eaten. As a result, algae oil has the power of fish oil. Because we make algae oil capsules from cultivated algae in a controlled environment, we are also sure that there can be no contaminants from the ocean. The capsule shell is also plant-based because the gelatin has been replaced by seaweed, among other things. 100% vegetable algae oil capsule