This card shows the full moon amongst stars, usually reflected in water .From the water a crayfish emerges, a creature which can breathe both in air and in water, one of the many signs of duality on the card.
The Moon card means, among other things:-
See both sides ,
A mind in turmoil,
As a one card reading, this card would say 'Be aware that you are not seeing the full picture, there is something else which you should be aware of which may not surface for a while'