Gerber Baby Food with DHA Review

My son has been eating a container of the Harvest Vegetables nearly daily:  he loves them.  I just read the label for the first time and noticed that the DHA is from added tuna oil.  I am not at all happy to see this.  I know that tuna is considered to be high in mercury, and I know that heavy metals are stored in the fatty tissues of animals..... therefore, it would seem that there must be a significant amount of mercury in the added tuna oil.

 Personally, I do not want to give my son any amount at all of mercury, especially when I know it's present and can avoid it.

 I am disappointed and suprised by this and have already thrown away the rest of the #2 vegetables with DHA that I had in my cupboard.