Since 10 o'clock this morning, I've been running an experiment with 6 individuals of the slug Megapallifera mutabilis. First, I let them get dehydrated by exposing them to the ambient air in small cups covered with a mesh.
I weighed each slug once an hour for 5 hours. At the end of the drying period, I placed each slug on the underside of a lid and then put the on top of a vial of water. The purpose of the 2nd part of the experiment is to let the slugs regain the water they lost in the 1st part.
It is past 5 pm now and the experiment is still going on.