please identify this slug

[Alexrd09]

Found this new guy in my tank today. Is he reef safe?

 

[Alexrd09]

Here are a couple more pictures.

 

[Alexrd09]

 

[andrewdtsch]

Possibly a nudibranch which may eat corals

 

[Beengirl]

With those antennae, makes me think its a sea slug of some sort. What exactly is it crawling/ siting on? A particular coral? Rock?

 

[Alexrd09]

I ended up taking it out Bc it was going over polyps and it looked like it may be eating them

 

[manbeast]

third and fourth pic look like a sea hare