Lord_Bryon wrote:I think I've seen the aquatic pupet show you describe. It's name escapes me
They are not "puppets" (that's a hand through the "thing"). They were marionettes (hence the opening statement of "Filmed in Super-Marionation" (strings from above to control the "thing").
The show you are thinking of is 'Stingray' (1964-65). It was also apparently the first British children's series to be filmed in colour.
Gerry Anderson (RIP) and his wife Sylvia were the inspiration and creative force behind all those great shows (they are still shown in syndication). Do not forget Space 1999 - even if it did to have marionettes, it was still a Gerry and Sylvia Anderson production. The first was 'Supercar' and then 'Fireball XL5'. Stingray came next with Thunderbirds also coming out the same year (1964). Captain Scarlet was 1967 and really improved the realism. Joe 90 was a year later in 1968. All these are before my time, but I did enjoy them on reruns as both a child and later on as an university student (when the next wave of releases in 1990's came about).
Captain Scarlett made a reappearance in CGI form before Gerry Anderson died. Thunderbirds is apparently set to make a reappearance as well, using voice talents from the original series! Hopefully it will be a great success. I think, in a way, those shows were ahead of their time. Especially the first season of Space 1999. (If anyone has not had the please of viewing Space 1999, and does not want to buy the series on DVD (I don't think the Bluray version is out yet - funny how long it is taking tech to change over now) someone has posted good quality full episodes of Space 1999 on youtube. Well worth checking out, in my opinion.