Answer:
Although I am still, in families I run. I continue to live on in a living one. As one continues to draw breath, I will not rust. However, when one stops drawing breath, I will become mere dust. What am I?
What has banks but no money a bed but no sleep waves but no ocean?
In Paris but not in France the thinnest of its siblings.
What is the word that even in plain sight remains hidden?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.