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1. Tuna are made to swim fast evasion from predators like sharks and billfish but also crucial and navigation in the marine world. Their migrations are driven swim with their mouth open, forcing water over their gills, al-
Tuna fish are renowned for their incredible speed and agility in for catching prey such as smaller fish and squid. by seasonal changes in water temperature and the availability lowing them to exchange oxygen with the water and fuel their
the ocean. Some species are capable of swimming at up to 50 of prey, showcasing their adaptability and resilience. They often metabolism. If they stop swimming, they’ll suffocate. In addition,
miles per hour in short bursts. Their muscular bodies and hy- 2. Tuna migrate incredible distances travel in schools of hundreds or thousands of fish that can mea- tuna are more dense than the water they live in, so if they stop
drodynamic refinement minimize resistance in the water. When Tuna navigate some of the longest distances of any marine spe- sure 10 miles or more across! swimming, they’ll sink. To maintain their depth, they must keep
tuna are swimming rapidly, their fins are retracted into grooves, cies. These magnificent fish traverse vast expanses of ocean, of- moving through the water.
and even their eyes form a smooth surface with the rest of ten traveling thousands of miles between breeding and feeding 3. Tuna never stop swimming
the head allowing them to swiftly navigate through both coastal grounds. Bluefin tuna, for instance, migrate across entire ocean Tuna must swim in order to breathe, but of course, they must 4. Tuna are considered warm blooded

waters and deep ocean expanses. Tuna have also developed spe- basins, from the western Atlantic to the Mediterranean, cov- also breathe in order to swim. Unlike most fish, they do not Unlike most fish, many tuna are considered warm-blooded be-
cialized scales to reduce drag. This speed is not just a means of ering distances that challenge our understanding of endurance have a method to pump water through their gills. Instead, tuna cause they can regulate their body temperature to be warmer

Photograph by: Harry R. Hindmarsh

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