My friend recently bought a blue lobster which was about half a foot long. He was a big guy and very healthy. One day he somehow climbed the tube to the bubble rock and climbed out of the tank. He was found a half hour later on the floor barely moving. It was about a 3 and a half foot drop off the table to the floor. We thought he was dead. We put him back in the tank and 2 days later he was himself again. 1 week passed, and surprise! He's found dead in the tank...no idea why. Could the drop have effected something? 
