An animal missing since 1929 has reappeared in the Patagonian sea

After almost 100 years of abscence, a sei whale specimen has been sighted off the Patagonian coasts confirming the return of this species to Argentine waters after disappearing in 1929.

The discovery is the culmination of work by a team of scientists from the National University of Patagonia San Juan Bosco and the National Patagonian Center.

Scientifically known as Balaenoptera borealis, this whale is considered the third largest species after the blue and fin whales.

 It can measure up to nearly 60 feet long and weigh more than 20 tons. Its physiognomy is more streamlined than the right whale and, unlike it, it is one of the fastest in the marine world.

This whale feeds on crustaceans and fish, although its main diet is krill. It has a life expectancy of between 50 and 70 years.

According to the red list complied by the International Union for the Conversation of Nature (IUCN), this species is in danger of extinction.

Although the exact number of specimens living today is unknown, it is estimated that there could only be between 10,000 and 50,000 of them left.

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