"Mama," my nine-year-old son said. "Did you know jellyfish are immortal?"
"What?" I couldn't believe it. "Nothing is immortal."
"Jellyfish are. I learned it in school."
"Yeah right," I said.
"But Mama, it's true!"
"Okay, I'm going to look this up." So I did. And guess what? One kind of species of jellyfish is indeed "immortal."
If you want to get enlightened, here's the article.
(Now my son says lobsters are immortal. I'm off to check this out, too!)