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Dolphins clearly demonstrate the ability to do all of these things and most scientists agree that dolphins are very intelligent creatures.ĭolphins have a large brain. She migrated between the east coast of Russia to the gray whale breeding grounds in Mexico and back again.Īlthough it is hard for scientists to agree on how best to measure intelligence and it is difficult to compare intelligence from one species to another, intelligence can broadly be defined as the ability to learn and apply knowledge to understand new or challenging situations and the ability to think abstractly. Scientists tracked Vavara, a female gray whale, as she swam a round-trip of 13,988 miles (22,511km) in 172 days. This is a round-trip of up to 7,000 miles (11,300 km).įor the time being though, the award for the longest whale migration and the longest migration recorded for any mammal, goes to a grey whale named ‘Vavara’. Some humpback whale populations have been found to journey even further than this, swimming between Antarctic waters where they feed and crossing the Equator to reach their coastal breeding sites in Colombia, Panama and Costa Rica. These whales regularly make incredible annual journeys of between 4,000 and 5,095 miles (6,400 to 8,200 km) each way, as they travel between their cold water feeding grounds and their warm water breeding grounds. Blue whales have the biggest hearts on the planet a football team could stand on a blue whale's tongue without falling off and they give birth to the biggest babies too.īaleen whales are long-distance travelers, and the champions among them include gray whales and humpback whales. With such gigantic proportions you’d expect some other record-breaking achievements and, again, the blue whale doesn’t disappoint. Even an average blue whale weighs 160 tons (145 tonnes) or as much as 25 adult African elephants. She weighed 418,878 pounds (190 tonnes) which is equivalent to about 30 elephants or 2,500 people. The heaviest blue whale was also a female hunted in the Southern Ocean, Antarctica, on March 20, 1947. The l ongest blue whale on record is a female measured at a South Georgia whaling station in the South Atlantic (1909) she was 110' 17" (33.58m) long. Blue whales in the Southern Hemisphere are generally larger than those in the Northern Hemisphere and female blues are larger than males.
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Blue whales and the other ocean giants live their whole lives in the ocean, where their bodies are fully supported by the salt water.īlue whales can reach lengths of over 100 feet (30m), which is almost as long as a basketball court or two yellow school buses parked end to end. Blue whales are mind-bogglingly gigantic they are overall larger than any of the dinosaurs. The blue whale is not only the largest whale living today the blue whale is the largest creature ever to have lived on Earth.