This is Jenn--Art was a registered Girl Scout but he doesn't remember many songs.
In the Pacific Northwest in Girl Scouts we sang a "seal hunt" song similar to "Goin' on a Bear Hunt", except seals, you know, and the chorus was "Atcha Katcha Nuga, atcha katcha nuga, hey, neesa nay, neesa dona neesa day" and the verse (?!) was "Etcha katcha neesa wa-a-ter" twice. Can't remember any English words except the narrative about the seal hunt. I will ask my daughters if they remember any more than that. Does that bear any relationship to what you are looking for?
Once we get this one nailed down, I'm trying to remember all the words for the hiking chant that went "Tongo", "Jiminy by-by-oh"...