Sounds like the Sirens of the Odyssey.
There were more names for these apparitions than I knew of. I think this kind of stuff is fun to contemplate.
The only ‘ghost’ I’ve ever seen was that of my Grandma (who pretty much raised me) soon after she had died at age 70 - I was 26 at the time and we were all devastated to lose her too soon.
I was sleeping, and I felt someone tug at my toe, which was how she had always woke me as a child. Grandma was standing at the end of my bed in her housecoat and apron and she looked me in the eye and said, ‘You wouldn’t believe how BEAUTIFUL it is here! And don’t worry - everything is going to be OK!’
It sure seemed real to me! And 40 years later, she is still missed as much as the day she passed. And I haven’t heard from her since. And with a few exceptions of what Life throws at us all, everything HAS been OK. :)