Retractable fins also allow a freer flow of water … Tuna are remarkable and impressive wild animals. The Atlantic bluefin can reach ten feet in length and weigh as much as 2000 pounds (more than a horse). Ocean sunfish, Mola mola , grow to become the largest bony fishes in the sea. ... What is the fastest a dolphin can swim? This advantage enables them to maintain high metabolic output for predation and migrating large distances. Pacific bluefin tuna, Thunnus orientalis are some of the biggest and fastest fish in the Pacific Ocean. Tuna swim … Southern bluefin tuna, like other pelagic tuna species, are part of a group of bony fishes that can maintain their body core temperature up to 10 °C (18 °F) above the ambient temperature. Save money and book directly from local suppliers. The tuna possesses a streamlined body to reduce water resistance and conserve energy for trans-Pacific migrations. Constantly on the move Atlantic bluefin tuna must literally swim for their life. Find, compare, and book sightseeing tours, attractions, excursions, things to do and fun activities from around the world. Relatively speaking they are not fast fish, especially compared to tuna that can achi … eve burst speeds exceeding 40 mph. Their specialized body shape, fins and scales enable some species of tuna to swim as fast as 43 miles per hour. Sailfish. Dolphins swim so fast it hurts. This means they can keep themselves much warmer than the surrounding water - essentially making them a warm-blooded fish! It can achieve a speed of 4 times its height (as biologists express that) per second, about 1 meter per second. So how fast can these tuna swim? Not quite. No. I have seen some move at a quick pace when properly motivated. Their rigid head helps them to swim fast, but doesn’t allow … They usually cruise around at 2.8-7.4 km/hour (that’s a slow to reasonably brisk walking pace for us), but can speed up to 14.8 km/hour (an average running pace) for some time. Let’s take a look at 10 of the ocean’s fastest animals. It is not quite as fast as tuna (the real fish) but far faster than most other swimming robots or robotics fish that we have seen in recent years. 1 on the list is the super-speedy sailfish. Northern bluefin tuna are fast!