From 60 belly buttons, the team found 2,368 bacterial species, 1,458 of which may be new to science.
Some belly buttons harbored as few as 29 species and some as many as 107, although most had around 67. Ninety-two percent of the bacteria types showed up on fewer than 10 percent of subjects—in fact, most of the time, they appeared in only a single subject.
One science writer, for instance, apparently harbored a bacterium that had previously been found only in soil from Japan—where he has never been.![]()
Another, more fragrant Read: [Smelly] individual, who hadn't washed in several years, hosted two species of so-called extremophile bacteria that typically thrive in ice caps and thermal vents.

ALSO, did you know that the bacteria found in bellies can be cultured into cheeses? (Not edible of course but who knows, I'm sure someone tried it, and liked it.)

Finally, Are you an Innie? Or an outtie?
I'd picture samples, but some people might complain.
