ELI5: Explain Like I'm 5

Nautilus

Nautilus is a sea creature that is really old! It's been living in the oceans for millions of years. It looks like a big round shell with feet and tentacles. Nautilus lives deep in the ocean, usually in coral reefs. They like to stay away from bigger things that might hurt them, like sharks. In the wild, nautilus can be pink, brown, and even blue! They have big round eyes to help them see and find food. Nautilus is a real survivor and can live up to 20 years!