Today I had my purse on my desk instead of in it. I picked it up and knocked my EcoSphere into the floor. It sounded like I dropped a bowling ball! I freaked out, the instructions say, DO NOT SHAKE! Not only did it shake, it rattled and rolled. I picked it up and checked it out, not cracked or broken and the shrimp inside were ok. Before I left work they were eating and everything. I just hope they're not dead when I go into work on Monday.