This is how you sign Sea in American Sign Language.
Learn how to sign "Sea" in American Sign Language (ASL). Sea is a compound sign: first, sign water, then sign waves. Water- using your dominant hand, extend and separate the three middle fingers while keeping the thumb and pinkie finger together. Subsequently, tap your index finger on your chin a few times. Form a tap your index finger on your chin a few times. Waves- take both open hands, palms facing down, and simultaneously have them bob up and down in waves in front of you.