What surprised you from the worm's dissection?

The worm dissection was very interesting I have never seem anything like it before. It was a surprised to me because I am used to a human body structure. A human body structure it completely different from an animals body structure because it uses different organs and systems that keeps it alive. The worm dissection was surprising to me because i have never seen a structure so different. I never knew that a worm even had blood vessels i didn't know it had a heart i didn't know its body systems until i did the worm dissection.