Sense Sonnet - Pumper

Mindless

Jellyfish have survived through all,
600 million years or more,
Mostly water within a ball,
Containing mysteries galore.
When a jellyfish bumps into
Any organic matter, then
A jellyfish does sting, it do,
And can be fatal if stung when.
But each other they do not sting,
When one on one bump does occur,
Due to some sort of sensing thing.
Jellyfish have much sense for sure.

Jellyfish thrive - that fact is plain,
And they do so without a brain.