Can someone help to ID these two things

[ReeferOnBudget]

I am new to saltwater and I have looked everywhere, couldnt find what these are, can you help IDing them. for the first one, its a purple bump that is hard. for the second, it looks like anemone as it opens and closes when it senses danger (i got multiple, all in rock and none in glass).

 

[EeyoreIsMySpiritAnimal]

The first one might be a small vermetid snail shell
The second might be a feather duster worm.

Need more magnified pics for a solid ID.

 

[Doctorgori]

The bottom pic looks exactly like the feather duster you find burrowed into branch rock…I’ve had those before, think I got one now…I’ll post if I can locate it

 

[ReeferOnBudget]

thanks guys, do i have to worry about them. any drawbacks for having them

 

[EeyoreIsMySpiritAnimal]

thanks guys, do i have to worry about them. any drawbacks for having them

Please research vermetids and feather dusters and decide for yourself.

 

[KrisReef]

thanks guys, do i have to worry about them. any drawbacks for having them

Check out ball anemone for the second one, hopefully it’s a feather duster?