spirula
/ˈspɪrələ/
noun
- A small squid-like sea animal with a coiled, chambered shell, also known as the ram's horn squid.
- Marine biologists study the spirula to learn about deep-sea life.
- A spirula uses its coiled shell to control its buoyancy in the ocean.
- The spirula has a beautiful spiral shell that is often found washed up on beaches.