Sashimi Tuna Nutrition, Protein, Mercury, and Portions
A practical sashimi tuna portion is about 3–4 ounces, providing roughly 20–30 grams of protein with little carbohydrate, but mercury exposure depends heavily on the tuna species and how often it is eaten. Larger predatory tuna, including bigeye and some bluefin, generally accumulate more mercury than smaller species such as skipjack.










