"The Turtles" was the name of an old band which had a very successful love song, so it might be a reference to that
Please take this one down. It reminded me of when my wife was cheating on me with a turtle.
That is the weirdest sentence I've had to translate on this website hahaha.
skilpadd[a/en] = the turtle (definite singular)
skilpaddene = turtles (indefinite plural.
'Skilpaddene' is a DEFINITE plural while 'Skilpadder' is the indefinite plural.
'Kona' means 'the wife' while the sentence is about 'the wives' (=konene) so it's plural.
Audio is bad here. Duolingo should make a little more effort to make kona and konene sound different...