Bell-shaped body plan like that of a jellyfish?

Here's why:

* Bell-shaped body: This is the defining characteristic of a medusa. It's the umbrella-like structure that gives jellyfish their iconic shape.

* Jellyfish: Jellyfish are a common example of organisms with a medusa body plan.

Other organisms with medusa body plans include:

* Scyphozoa: The true jellyfish

* Cubozoa: Box jellyfish

* Hydrozoa: Some hydrozoans, like the Portuguese Man o' War, have a medusa stage in their life cycle.

Important note: Not all jellyfish have a bell-shaped body. Some species, like the box jellyfish, have a more cube-shaped bell.