Their torpedo shape; this super-streamlined shape means that the bluefin tuna can swim very fast, reaching speeds of up to 25 m/h!
Bluefin tuna are normally around 3 metres long but large adults can grow to as long as 4 metres. They can weigh up to 650kg, as much as a caravan!
Tuna will eat most things but their diet mainly consists of smaller fish, squid, crustaceans and eels. They can dive up to 1,000 metres to find food!
Bluefin tuna live in the Mediterranean Sea and the Atlantic Ocean. However, they travel long distances for food.
Bluefin tuna are classed as endangered. Populations have declined by 85% of their original size since being fished on an industrial scale.
Overfishing. Bluefin tuna is some of the most expensive fish in the world which means that people continue to overfish it.
Atlantic bluefin tuna can dive down to depths of 1,000 metres!