Tuna fish and sardines are not the same thing. Sardines naturally fit in a can they don't have to be grind or cut up like a tuna fish.
Tuna "grows to a length of 14 feet (4 meters) and a weight of 1,800 pounds (800 kilograms). Its average weight varies from 60 to 200 pounds (25 to 90 kilograms) or more," according to http://www.britannica.com/EBchecked/topic/608882/tuna.
Forget about the 1800 pound tuna for a moment.
If the "average tuna" weighs upwards of 200 pounds, can you imagine how large the can would have to be to fit that fish? You would have to seal it in a can the size of a truck gas tank at minimum.
Store shelves are not designed to hold cans that size. Can openers would have to be the size of the Jaws of Life to get a can that size opened.
Furthermore, once you crack that can open, you will have to eat a lot of fish fast! Or have a big tuna party. Otherwise much of it will go to waste.
Tuna is packed in portion sized cans for good reasons my friend
It's a monetary industry. Commercial fisherman bring in the fish to sell. The buyer needs to make money, so he sells it. So on and so forth. By the time it gets to the shelves they have divided it up in the best way to make a profit. That's what I think anyway.
because when the poor tuna is caught, only a bit of him is put in the can... the rest is roasted at the "well done you caught a big one" party!
The tins are smaller because the tuna is shredded before being put in the tin
It's one of the mysteries of life, I think we should pour billions of research dollars into this subject, maybe one day our great-great grandchildren will figure this out.
Also, how DO they get the caramel inside the caramilk bar?
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