There is an old greek myth about the origin of dolphins. Supposedly they were sailors who fell overboard a sinking ship and sprouted fins. If dolphins used to be human, then it’s no wonder we identify so strongly with the creatures. They still act like us.
All that to say, it came as no surprise to me when Jason Bruck released findings indicating dolphins remember their buddies’ whistles even after being apart for 20 years. Each dolphin has a signature whistle which serves as its name. So of course, they remember their best friend’s name.