Striking personality differences have just been observed in Port Jackson sharks, which are relatively common sharks in the waters off of southern Australia, including near Port Jackson.
The study, published in the Journal of Fish Biology, adds to the growing body of evidence that shark individuals of many, if not all, species are distinct, unique beings just as no two humans are exactly the same.
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"Over the past few decades, personality research has shown that nearly 200 species of animals demonstrate individual personality," lead author Evan Byrnes of Macquarie University said in a press release. "Personality is no longer considered a strictly human characteristic, rather it is a characteristic deeply ingrained in our evolutionary past."