So I found this rock in front of an apartment complex in San Diego. When I looked closer, I noticed something inside it. To me, it looks like a fossil of some kind. (Included a close-up pic) But honestly, I really don't know much about rocks, fossils, minerals or gems but I've always been fascinated with them since childhood. If I saw something pretty or interesting looking, I kept it but never really did research on them. Curious to know what anyone thinks of this rock though. Thanks for any help in advance.