what are these worms/snails ?

[rajadrd]

i have these 2 types of snails/ worms on my goniopora . are these harmful or beneficial?

i also have this algae,what type of algae is this? and this is the only algae in my tank, i have turbos,trochus and nerites and none of them seem to eat this algae.

thank you in advance and this is my first post on this forum

 

[Ron Reefman]

I can't tell you what they are. But my best guess is, they are there to eat your algae and not your coral.

 

[cloak]

The first picture looks kind of like a Peanut worm. The blue arrows in the second and third picture look like they're pointing toward a Vermetid snail.

 

[HOOPDEEZ]

Hello and welcome! I agree that the first pic looks like a peanut worm, although without seeing the ends of it, I can’t be 100%. The other things look like spirorbid worms, or if they are larger than I’m thinking, then they could be feather dusters. Perhaps googling those 2, you can confirm. Doesn’t look like anything to be alarmed about

 

[rajadrd]

thank you for your replies , i searched vermetid snails and thats definitely what i have ,so thanks for the id cloak.

now the worm in the first pic doesnt look like peanut worm i see on google images but im not really worried about it since i will be getting a yellow coris wrasse which should make a quick meal out of it.

can anyone id the algae? i used to have hair algae ,which i got rid of after installing an ATS but this algae is always present on that specific rock, it doesnt spread to other rocks and none of my snails seems to be interested in eating it.
so it would be very helpful if you can ID it and also suggest me something that will actually eat the algae.