Dolphins display memory better than elephants
WASHINGTON (AP) - Forget elephants. Dolphins can swim circles around them when it comes to long-term memory.
Scientists in a new study repeatedly found that dolphins can remember the distinctive whistle - which acts as a name to the marine mammal - of another dolphin they haven't seen in two decades.
Bailey the dolphin hadn't seen another dolphin named Allie since the two juveniles lived together at the Dolphin Connection in the Florida Keys. Allie ended up in a Chicago area zoo, while Bailey got moved to Bermuda. Yet 20 years later, Bailey recognised and reacted to Allie's distinctive signal when University of Chicago researcher Jason Bruck played it on a speaker.
Other dolphins had similar steel-trap memories. And it's not just for relatives. It's non-kin too.