Here is there description of them.
Mama Mia Wormsรขโยข The common name of these deposit-feeding annelids from the family Terrebellidae is Spaghetti Worms. But let's face it - how many people can spell "spaghetti" correctly on the first try? We sure couldn't. Hence the name, Mama Mia. These highly active worms have bright red buccal tentacles which extend out over the sand bed to gather suitably sized particulate materials, which they "lasso" by tentacular contraction. It's fascinating to watch, and it sure beats vacuuming your sand bed. Here's a bonus: you can count on Mama Mia worms to reproduce in your tank because they have direct development (no planktonic stage). Specimens average approx. 1/2 "-1" in length with tentacles extended. 100% captive-bred by IPSF.
On another note, I actually received the white worms today. So my fish are happy little swimmers and they send you many thanks Paul. :celeb1: I gotta say, the place I ordered from did a bang up job. The worms were not a starter culture at all. I was able to feed right away and the packing job was great. Shredded newspaper with a cold pack, wrapped in the foil backed bubble wrap. Looking at your pics Paul, I'd bet I was shipped the same amount or more. The pic they have is accurate to what you get. I ordered from skeeter bites dot com.