odd 1cm creature

[StanD]

Is this harmful? Measures around 1cm and is free swimming - also clings to rocks.

 

[DLHDesign]

Never seen it before... #reefsquad?

 

[TheEngineer]

Could be a skeleton shrimp.

 

[Kamden Uelton]

Munnid Isopod or Skeleton Shrimp would be my best guess.

 

[KJ]

@Lovemyreef2015

 

[Lovemyreef2015]

It's a Erichsonella attenuata. They are part of the Isopod family. They come in all different colors from green, yellow, to brown.