So today a lot of interesting things happened...
I was at school when all of this happened, and thank goodness my mom noticed and helped. Around the intake valve of the filter, I have some pantyhose. There not very long, because I cut them. My mom was in my room, and she didnt see Marco in my tank. I got a bunch of new decorations so she thought that he was just hiding. Then she saw something wiggle inside the pantyhose. So she turned the filter off, and it was still wiggling. Then she took off the pantyhose, lifted the one end, and out he swam! He isnt hurt, in fact he is swimming around. The only thing is that a little bit of his tail got ripped. I gave him some nice clean water, so I will see how that heals up. But I am so glad he is okay!