It depends on which kind of Bluefin Tuna you are referring to. Southern Bluefin Tuna live in Southern hemisphere waters of all the oceans. Pacific Bluefin Tuna live in the Northern Pacific Ocean. Atlantic Bluefin Tuna live in the Eastern and Western Atlantic Ocean as well as a parts of the Mediterranean sea. Longtail Tuna live in the Indo-West Pacific waters.
Tuna are all marine (saltwater) and they are predatory, so yes, tuna eat saltwater fish. They can only eat saltwater fishe because they do not live in freshwater.
Tuna eat smaller fish, but they live in salt water, not fresh. Edit: That's not quite 100% true. While the tuna that we all get in the store is saltwater, there's a lake in Nicaragua that has freshwater tuna living there.
Tuna do not come from ANY continent. Tuna are marine fish.
Sharks tuna and chepalopods all live in seamounts
All life has to live off some sort of water! )
The Yellowfin tuna are found all along the Gulf, out in the open sea. This species of tuna breeds more often all throughout the year.
the hydroshere contains all water, from oceans to puddles. So it helps the biosphere live by giving it water. The biosphere is all life on earth so...yeah
water is one of the most important things for all life on earth. we humans rely on water to keep ourselves hydrated and all other animals like sharks, horses and mice need water to live. if no water was on the planet, then all life will die.
All amphibians live underwater at some point in their life, and some do their whole lives.
That depends on whether you mean yellowfin tuna, bluefin, skipjack tuna, canned (in water) tuna, or canned (in oil) tuna. For examples of all, both cooked and raw, see the page link, further down this page, listed under Related Questions.
Yes, all tuna have scales, but they are small and nearly invisible.