Atlantic Bluefin Tuna
Unlike most fish, Atlantic bluefin tuna are endothermic, or warm-blooded. This means they can generate body heat by swimming and keep their body temperatures higher than the surrounding water. This special trait, known as thermoregulation, allows them to live in a wide variety of climates and helps them on long ocean journeys.
Atlantic bluefin tuna are schooling fish and like to stick together based on size. They use their speed to hunt darting, schooling fish, and swim slowly with open mouths to catch small, slow-moving prey. These fish prefer to stay at depths where they can see sunlight. They also don’t stay in one place for too long—instead, they migrate long distances and have even been tracked traveling from the Bahamas to Norway!
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Status and Conservation
Although Atlantic bluefin tuna used to be listed as Endangered by the IUCN, they are now considered a species of least concern—indicating that conservation measures are helping their population numbers.