krill oil

I've used fish oil before and it works pretty good, I felt like my joints felt a little more loose when I was taking it I was wondering though about krill oil and if you could tell me a little bit about it. Like what is a Krill and is it better than using fish oil or is it the same thing

what are the best seafood oils I should be adding as supplements to my daily intake. I ran different types from MCT oil, fish oil, krill oil, and other types of oils from the ocean. Are these essential to be using and can they help with joints. My friend said he uses them and they've helped a lot