Blue whales in the waters off California are making a comeback, as population numbers of the largest animals on Earth rebound. While paleontologists believe the Argentinosaurus may have been the largest dinosaur to ever live. those ancient animals were only half the size of modern blue whales.
California's blue whale population is now believed to be at sustainable levels for the first time in years. The highly intelligent and social animals are found along the western coast of North America, from Alaska to equatorial regions. They are most often spotted by humans when they are between 2...
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