thanks bbjr and cecil.
that was my 4th trip there and only the first time i have witnessed the "chub hatch". its well known and i had heard about it in the past.....this time i was lucky enough to be in the right place at the right time. they can be so thick as to set off the fishfinder's shallow water alarm.
cecil, yes in a way....not salt like table salt, but alkaline deposits left on black basaltic lava as the water recedes......check out this pic....
