Flatworm?

[Ahowell]

I noticed this in my tank after receiving an order of Flat Branch Gracilaria and Red Gracilaria. I think it’s a flatworm but have no idea what kind. It has left my corals (softies) alone and I have mostly noticed them on the glass and in the rock work. Anyone know what it is?

 

[rayadog]

It is quite hard to make out; even the general body plan. But based one what it looks like in the pictures and your assumption description, my guess would be something like a sea hare.

 

[Ahowell]

It is quite hard to make out; even the general body plan. But based one what it looks like in the pictures and your assumption description, my guess would be something like a sea hare.

This one is upset I caught it so it’s balled up but it is very flat with almost no texture to it’s shape. It is very much shaped like a flatworm but I haven’t been able to identify it through my research. I’ll try to get a better picture when the lights come on in my tank.