Odd stuff on Snail shells

[Fezbearer]

Picked up some Trochus snails and I'm curious what these white dots are on the shell.

This guy also has them and seems to have algae growing on his shell as well.

What are your thoughts and possible solutions?

 

[KingTideCorals]

For the small white shells they most likely are small tube worms.

The algae growing on the snail Im working on and ID for, but there tons of algae/macro algae out there!

 

[sixline]

Yeah, the white spirals look like harmless tube worms.

 

[ReeferWarrant]

spirorbid worms, filter feeders

 

[Fezbearer]

Thanks everyone.

 

[Oldsman]

My trochus has an area of algea or something on its shell like that, makes it easier to spot amongst the rocks lol