Not sure if anyone has seen this but thought it was really neat.
http://www.iflscience.com/plants-and-animals/time-lapse-molting-giant-spider-crab
How are shrimp and crabs molt.
http://www.iflscience.com/plants-and-animals/time-lapse-molting-giant-spider-crab
How are shrimp and crabs molt.