Sea hare

[nashorn]

I pickup a sea hare to get rid of a bit hair algae. I add a sea hate about a week ago but I haven't seen it since?
I kinda think it's dead.
Are they nocturnal ?

 

[Kamden Uelton]

d e a d.

 

[S.O.MLemos]

Same thing happened to me after 2 days and I never saw it again and it wasn’t little