Salmon has more nutritional value than tuna — it has 3 times the omega - 3 fat, plus twice the vitamin E, 3 times the folate, and a full day's supply of vitamin D. Canned salmon is also a good source of calcium, with a 4 - ounce serving having about 250 milligrams of calcium (this is because canned salmon
contains edible softened
bones, which are very nutrient - dense,
containing many minerals).