Re: Amerindian navigators and Eurocentrism in scholarship

["Monte Davis" <modavis@bellatlantic.net>]

Mary Grether wrote:

>>A long time ago, I heard that fish had something like a bladder(not
right word) in their body that held fresh water, seems like near their
head. could be wrong on that one.<<

The buoyancy bladder is gas-filled, but the water in the flesh of fish (and
their extracellular water) is nearly fresh. Their cells have good ion pumps
to overcome the osmotic tendency of salt to migrate in. 

Castaways who can catch enough fish don't die of thirst.