The Adventures of Snelgrove Snail (partially found Canadian puppet TV series; 1979-1980)
The Adventures of Snellgrove Snail is a 1980 television puppet show.  This TV show was created by D.W. Reid Film Company and was voiced by Helene Buwalda, Joyce Clarke, and Barrie McLean.  It originally debuted in Canada on CHCH-TV, but it also aired in New Zealand on TVNZ. The series follows the underwater village of Snailsville and its gastropod inhabitants.
This TV show is currently lost, and its whereabouts are unknown. It's not clear at this time whether or not it'll be released again. The only existing footage of the series is a VHS-rip of the introduction to the series on YouTube, which can be viewed in the gallery below.