One of the most interesting tidbits about this fish is that it is actually warmblooded, a trait that is rather rare among fish species. This allows them to move quite comfortably between cold feeding waters and much warmer spawning grounds in the Gulf of Mexico and the Mediterranean Sea.. Atlantic Bluefins are a highly migratory species, and can travel the length of the ocean multiple times yearly.
Human fishing since the 1970s has most notably caused a decline in the species. Commercial fishing has greatly reduced the number of fish, and now conservation efforts are being made to keep the species from going extinct in certain areas of its range. The fish are especially popular in Japan, selling for tens of thousands of dollars per animal. The most ever paid for one of these giants was $180,000.