watch out for falling snails!

Nina Pinto is in no doubt that sea snails are tenacious creatures. To find out how strongly they could cling to the wall of a fish tank, the year 10 student from Hornsby Girls High glued tiny hooks to their shells.

She attached each snail to a pulley and added weights until its foot lost its grip and it dropped off.

Her purpose was to see if reductions in the water’s salinity – a possible consequence of climate change – affected the snails’ ability to hold on. As the salinity of the water decreased, so did the snails’ staying power.

“If sea levels rise there could also be stronger currents that pull them off,” she said. Sydney Morning Herald, 27 Oct 2007