A few unknown items that I cant find online

Question
Hello Jennifer,

I have recently noticed the two following items in my tank. Please see links to pictures below. The "Finger print" is actualy on the inside of the tank and wipes of semi easy. It showed up sometime between last night and the today. The "Worms" I am not sure what they are but just noticed them. Can you help me identify these? A side note. Were the finger print is in the tank and were most of the worms are is in direct current from the power head.

About the tank:
I have a 150 Gallon Reef Tank, Protien Skimmer, 190 watts of CF lighting running 50/50 bulbs. I have a 600 gph pump in the refugium for water circulation. The tank has been established for about 4 months in my possesion and prior to that was up for over 1.5 years at my neighbors. During the transfer we kept all the original water to reduce the shock and stress on the fish. All Chem levels are within range.

Pics of the tank:
http://www.newworldreps.com/fishtank/1.jpg
http://www.newworldreps.com/fishtank/2.jpg
http://www.newworldreps.com/fishtank/3.jpg
http://www.newworldreps.com/fishtank/4.jpg

Pics of the unknown items:
http://www.newworldreps.com/fishtank/finger_print.jpg
http://www.newworldreps.com/fishtank/worms_mabey.jpg

Thanks,
Ken

Answer
Hi Ken. Nice pics of your tank! The first unidentified "fingerprint" as you called it looks to me like it is snail eggs. These are very common when snails are present however they usually don't develop into adult snails because they get eaten or sucked through your filter during their planktonic stage shortly after hatching. Here is a website that will go into greater detail about snail reproduction.  
http://www.reefkeeping.com/issues/2003-02/rs/index.php
The other picture is of a typical spaghetti worm. These worms are very common in a reef environment and often hitchhike into the aquarium on live rock. They are closely related to your tube worms and feed by placing their tentacles spread out over the substrate to catch small particulate matter which they then transfer down to their mouth. They live most of their life with their bodies buried in the substrate or in a hole in a rock and are rarely seen moving about the tank. They are beneficial scavengers that will readily reproduce in the aquarium. Here is a web page that can go into better detail than I can.
http://www.reefkeeping.com/issues/2002-06/rs/index.php
I have them in my tank too!