Answer:
I can be quick and then I'm deadly, I am a rock, shell and bone medley. If I was made into a man, I'd make people dream, I gather in my millions By ocean, sea and stream.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
With pointed fangs it sits in wait. With piercing force it doles out fate, over bloodless victims proclaiming its might. Eternally joining in a single bite.
What word starts with 'E', ends with 'E', but only has one letter? It is not the letter 'E'.
I have two eyes in the front and a lot of eyes on my tail