How to Sign "Underwater"
To sign 'underwater', you will combine the signs for 'water' and 'under'. Start by forming a 'W' handshape with your dominant hand and tapping the side of your index finger against your chin. Next, hold your non-dominant hand flat in front of you with the palm facing down. Place your flat dominant hand below it, and move it downward and slightly forward, dipping underneath the non-dominant hand.