PCB, DDT and fishoil?

I dont know if this is the correct forum but Il ask here anyway.

I just watched a thing about PCB and DDT and what stuck to my mind was that it gets stored in fat and mostly in water living animals. Whale fat has ****loads of those chemicals in them, I assume fish has a great deal to, but they are not as high in the food chain so it shouldnt be equaly bad.

The ammount of PCB in polar bears was 3 billion!!!! times higher then in the ocean. Insanity.

My question is from what source do they get fishoil when making fishoil supplements?

Is flaxoil a better omega-3 source or is it just as poisoned with that **** :unsure:

Also those crap chemicals gets stored in fatty deposits. What happens when cutting hardcore. Does it go straight to the blood and then goe away after it has done its damage or does it find another storage place in the body?

bump