ID please

[Dwerbs]

I have a couple things that I would like to get ID'ed my first is a worm that I believe I have more then one of in the tank it is really quite long (min. 10 cm) but only a little thicker then like 2-3 mm. It black and white striped and like almost unrolls itself to reveal a head of like feather duster like things. (looks like one of those toys that are a rubber balloon rolled in on itself and if you squeeze it it just shoots out of your hand.

in this one you can see its feather dustery head.

now you can see how it is really two different colors and the striped part is just the part that "unrolls"

my other ID are these little "sacks" that are stuck to my walls. When I find them they are white and filled with slightly green tinted something. Then I come back and they are open like a little trap door and there is nothing inside.

Thank you for your time,
Sterling

 

[landlord]

The second picture are eggs from nerite snails. Like little white sesame seeds.

 

[Dwerbs]

sweet I thought they were snail eggs but didn't know which. there is like no chance of the babies becoming mature in an aquarium right?

 

[landlord]

I wouldn't say that. As long is there is food for them to eat and places to hide they can make it. I do have to say that in my tank I have a lot of adults and a lot of what I would call babies 4-5mm shell diameter. I haven't seen any teenagers though, curious. They all must be hiding out smoking reefer or something

landlord

 

[jiperalta]

first one looks like a peanut worm

http://www.reefkeeping.com/issues/2004-04/rs/index.php