hey guys I went by my LFS today and they just got in some beautiful sponges a few days ago. They were $18.00 which I thought was a good deal. To my surprise, the sponge was attached to a big clam. I dont know what kind of clam it is so maybe you all could identify it for me. I had a feeling it was a clam because the girl at the LFS had a hard time prying it from the substrate. It closed and when I added it to the tank it is open. Notice that the clam's opening is facing the substrate. Is this ok? How do you think this clam will do since it has a pretty good sized sponge on it. I dont have much experience with clams other than a few cleaner clams I purchased from SWF.com but I never see them since they bury under the sand. The other hitchhiker was an emerald crab and it was nestled in the sponge. A three in one combo for $18.00. Can't beat that. Thanks for the advice! Notice the clam's opening on the left, facing the substrate.