rafael grassi said in this press _ depend upon it.afael grassi said in this press conference that - depend upon it. rafael grassi said in this press conference that the l in this press conference that the material would pass through marine organisms without causing harm. he says many nuclear plants around the world already discharge. is it tritium, the radioactive isotope that we are talking about that is in the waste. have i got that right? so we the waste. have i got that right? sr we collect radiated water because tritium itself is a hydrogen compound. it's radiated water that is a concern. when we look at the chemistry, that is where we have had some animated discussions of any gay physicist. they are treating the ocean as a sterile vessel. as of the ocean as a sterile vessel. as of the ocean where a sterile vessel in which you are putting a certain known concentration of radioactive material and then you calculate the volume of the ocean, you would say that the dilution is great. but biology does the exact opposite. we have the w