Science Daily reports:Wild orcas across four continents have repeatedly floated fish and other prey to astonished swimmers and boaters, hinting that the ocean's top predator likes to make friends. Researchers cataloged 34 such gifts over 20 years, noting the whales often lingered expectantly — and sometimes tried again — after humans declined their offerings, suggesting a curious, relationship-building motive... "Orcas often share food with each other — it's a prosocial activity and a way that they build relationships with each other," said study lead author Jared Towers, of Bay Cetology in British Columbia, Canada. "That they also share with humans may show their interest in relating to us as well." The complete research was published in the Journal of Comparative Psychology. Its title? "Testing the Waters: Attempts by Wild Killer Whales (Orcinus orca) to Provision People (Homo sapiens)."Read more of this story at Slashdot.