Worm or alien poop or?

[Anthrilliel]

Very new to marine tanks. I just got a couple snails and i saw that alien green thing on it. Is it poop or a worm? Do I need to do anything? It is not moving.

 

[MTBake]

That looks like a piece of algae to me. Perhaps chaetomorpha or bubble. Hard to tell when it's this small.

 

[Jon Fishman]

Wouldn’t worry too much at this point. By the looks of your rock, a lot of good stuff on there too.

 

[MTBake]

Wouldn’t worry too much at this point. By the looks of your rock, a lot of good stuff on there too.

I was going to say something about the rock, lol. It looks like some really nice rock!

 

[Cole.mormon]

Its ok its algea

 

[Cole.mormon]

That is going to happen

 

[SHNICI]

That's a snail (the red "rock")
And it look snail (the green one), can be chaeto macro algae, but if it's moving on the snail shell it's a slug (don't remember the name of it).
But again w/o another photo from different angle can't confirm 100% (can be slug/nudi, can be chaetomorpha algae )

 

[JGT]

Very new to marine tanks. I just got a couple snails and i saw that alien green thing on it. Is it poop or a worm? Do I need to do anything? It is not moving.

Algae, not an alien.

 

[Anthrilliel]

Thank you everyone

 

[BurgerFish]

Looks like chaeto.