28 Jun
2013
28 Jun
'13
8:50 a.m.
On Fri, Jun 28, 2013 at 10:04 AM, Bill Gosper <billgosper@gmail.com> wrote:
And while I am this far off topic, why do nearly all fish bother to swim upright? This supposedly requires rocks in their heads--"otoliths", of which my father had a collection. Wouldn't bird|dinosaur-style "gastroliths" (well anyway, belly ballast) be simpler? Do fish go belly-up the moment they die? --rwg
Surely they "swim upright" by definition. Are you asking why they keep their bellies on the bottom? --Michael -- Forewarned is worth an octopus in the bush.