Answer:
With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
Born in the ocean and white as snow. When I fall back to water, I disappear without a trace. What am I?
I am a king who's good at measuring stuff.
I have a head and a tail but no body. What am I?
Give it food and it will live, give it water and it will die.