"I guess not," comes Gorgug's answer. He doesn't really care if Sephiroth wants to eat them, though he wonders, saying out loud, "Is that safe? You think it's safe? Do you cook barnacles first?"

Someone does not eat enough sea food to be an expert in this, if people even eat barnacles (are they technically a 'shell fish'?). ...unless this is actually something gross that is flying over Gorgug's head. He looks at the stuck on little critters, and adds, regardless of what Sephiroth might decide for his stomach, "I've got a chisel. I can give you a bag, and... do whatever you want with them after."

At least, once they go to his workshop. If Sephiroth wants to keep exploring, there's a few other buildings in the area for that.