What the heck is on my snail?

[MrsBugmaster]

Saw these two things on one of my turbo snails. Good or bad?

 

[SaltySqueeble]

That’s a little creepy. Is it not just a baby snail? Looks pretty much like mama there…

 

[SaltySqueeble]

It’s some sort of snail

 

[ISpeakForTheSeas]

Saw these two things on one of my turbo snails. Good or bad?

Hoof snail - harmless and neat:

Yeah, looks like either a Slipper Limpet (genus Crepidula) or a Hoof Snail (taxonomic family Hipponicidae) - both are harmless; slipper snails are filter feeders, and hoof snails feed by extending a long proboscis (think like an elephant's trunk) to eat either their host snail's waste or any food it can reach from its host's back.