Type of nudibranch??

[Sparent25]

Not a great photo but about 1/4 to 1/3 of an inch on the glass. I haven’t added anything to my reef tank in a long time and first time I’ve seen him? Any idea on what it is...assuming it’s a nudibranch of some type

 

[jamesdong009]

Nudibranchs don't have a shell that I know of. Those look like possible ceriths.

 

[jamesdong009]

One with a feather duster ,hopefully. Might be aiptasia

 

[Knight]

the one on the right looks like a nassarius snail

 

[Cpage101]

the one on the right looks like a nassarius snail

+1 on nassarius

 

[Sparent25]

Bad picture and the “one on the right” is actually a reflection in the glass. No shell. I’ll try to get a better pic if I ever see him again!

 

[Cpage101]

maybe a stomatella snail

 

[Knight]

Bad picture and the “one on the right” is actually a reflection in the glass. No shell. I’ll try to get a better pic if I ever see him again!

HA! That is awesome - but, no kidding - that looks exactly like what my nassarius snails look like when they are roaming.
This is one of the better optical illusions I have seen on BRS
Now that I am looking even closer - it looks like he is waving to his reflection with that feather duster