The longtime actress and comedian passed away at her Cape Cod home Saturday after a bout with pneumonia -- according to her daughter, Kerry Karsian, who confirmed her death to The Hollywood Reporter.

Carroll is perhaps best known for playing Ariel's half-octupus/half-human nemesis in the 1989 hit Disney movie -- and for all the show-stopping numbers she pulled off on her own, doing all of the singing for the film by herself ... and reprising the role throughout the years.

PC had done a lot more before that, though ... she was a veteran in sitcoms well before 'TLM' came along -- having starred in fan favorites such as "The Danny Thomas Show," "The Mickey Rooney Show," "The Red Skelton Hour," "Getting Together," "Busting Loose," "Galaxy High School," "Too Close for Comfort," "Foofur," "She's the Sheriff" and many more.

Carroll also had lots of guest appearances on iconic series, plus regular bookings on variety, game and talk shows throughout the 20th century -- her humor and wacky personality was a hit with audiences and hosts alike.

Her career speaks for herself ... the woman had won a Grammy, an Emmy and accolades from her theatre work as well. As many have rightly said, she was a pioneer in the biz.

Caroll is survived by her daughters and granddaughter. She was 95 years old.