Einstein Snail

[loftreef]

Anyone know what this is growing on my snail? It's only on this guy who obviously is now named Einstein. It doesn't seem to be causing any issues, just curious.

 

[Tired]

Looks like colonial hydroids. They can sting corals if they bump corals, but corals generally win a growth contest and smother them. Technically a pest for the stinging ability, but a very minor one, and cool-looking.

Nice snail decor. Keep it. Neat that they're bigger near the big end of the shell.

 

[taricha]

holy hydroids!