A white rocket shaped worm? And pred flatworm

[Afkomjorgen]

White worm found in rock. I was chiseling away pieces of rock with mushrooms. He was literally running through the rock away from me.
Found this massive flatworm in there too, 3-4”.

What is the white worm? Peanut?

This is the third predatory flatworm I’ve found in this tank. What is it, what does it eat and how do I get rid of it?

 

[Mhamilton0911]

Leopard polyclad flatworm. Eats snails. Not a friend.

 

[Afkomjorgen]

Any ideas on the weird white worm that is also in the box?
Part of me is like, probably a variety of peanut worm. Which are great and I would welcome into my reef. But want to make sure as it’s pretty weird looking