Wow. Sure looks like that! Oyster, huh? Didn't even occur to me. Both are filter feeding bivalves right, so do I need to do anything differently?

I was amazed to see the little barnacle made it and is busy most of the time. I'm not sure where they came from, but I'll try to find out today. I had mixed feelings about it - obviously it was wild harvested, which is a shame. Clams breed by spewing reproductive cells out to mix with their neighbors, yanking one from the ocean dooms it, genetically speaking. If it turns out to be any oyster, it's probably in the same boat. But it's here now, so it least I got it and will appreciate it and feed it. Everyone else I've pointed it out to was not impressed, or even called it ugly. :(