It would register only 1/6 of the weight it did on earth.
then there would be no moon
If you were on the moon your weight would lower, as there is no gravity.
It depends on what kind of mermaid scale, the material of the necklace, the concentration of sea water, and the cycle of the moon.
You would see the moon.
you would jet a bit burnt if you where on the moon. I'll find out about the next eclipse
they would stay on the moon and they may not decay.
A full moon
The moon phases would change.
There would never be a full moon.
Earth would blow up along with the moon.
it would float
nothing would happen