What are these strings?

[shadynate]

Note this was after first putting these coral in the tank, same day that is.

 

[fishguy242]

Slime coat protection ,should be gone today...

 

[homer1475]

Coral slimeing up to protect itself while it adjust to your tank. It will go away in a few hours to a day.

 

[shadynate]

AwesoMe thanks guys!! Kinda what I figured