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PhantomDusclops92
Since: Oct, 2010

I think it was an educational show, and I don't remember the channel it was on. If it helps, it aired on Channel 253 in Nebraska, or somewhere around that channel. It was 3D animated, and all the characters had a weird design, one of them was a white-ish coloured square thing, and there was an episode that taught you how to whistle. I'm also pretty sure they were in a building underwater, but I might be wrong on that. And it isn't Octonauts.