My guess would be spirorbid worms. Melev's Reef - Visual Identification Second column, second row. Don't worry about them -- they are harmless. I have a gazillion of them all over the rocks and glass.
I do all my school work on the computer. And I'm easily distracted :D. Therefore, I can't spend more than 15 minutes doing school work without interrupting myself and doing something else online. It'll all be worth it in a year in a half when you all will have to call me "Doctor" :p. Nice pic Brian. Your camera rocks!
That was taken with a canon 30D @ ISO 100 using a Sigma 150mm EX DG APO Macro lens and the built in flash.
I took a whole bunch of them but I liked this one the best. The hardest part is finding a good spot on the glass with little distortion. The other thing is to keep the angle of the camera to the target as shallow as possible.
That can be a problem (bowfront). There are tools in photoshop that may be able to pull the iamge straight. You may want to give that a try, othere than that its a hit or miss situation. Keeping the camera as perpindicular to the glass(acrylic) as possible is the key.
I like the panoramic view bowfronts give,makes things look larger than they actually appear.When I took pics of my bowfront,it look best when the camera was in the same angle as the glass(did that make any sense?)