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Bluefin tuna are quite the catch in the marine world! They are often hunted by larger predators such as orcas, great white sharks, and even other species of tuna. These formidable hunters usually target young or injured bluefin, showcasing the infamous food chain dynamic in ocean ecosystems. Interestingly, humans also play a significant role, as bluefin tuna are a prized fish in sushi and sashimi dishes, leading to overfishing concerns. When it comes to protecting themselves, bluefin tuna have some cool strategies! They can reach speeds of up to 75 km/h (about 46 mph) to escape predators, thanks to their powerful, streamlined bodies. They also sometimes school together to evade attacks, using the "safety in numbers" tactic to confuse their would-be assailants. But remember, even the fastest fish can’t always evade the hungry jaws of larger ocean dwellers!