Dear sir/Mam,

I want know science behind finding out underground water resources using coconut.
I really surprised when I experience this myself, I kept coconut horizontally on my palm straight and walk through land and at specific position coconut tail moves upward and remain straight vertically.
This technique called water dowsing, when I searched on Google but could not find satisfactory answer for this one.
Please tell me what exactly happened and how it happens....

I have attached some photographs of me with coconut in hand...

Regards,
Ganesh Gaikwad
Mumbai, India