scarlet hermit shed its body

[chris200058]

My scarlet hermit has a 4 inch shell.
Is everything alright with this I was freaked out this morning when I turned the light on and I found a carcus of my hermit crab 1/2 buried and 1/2 his body tore apart. He hasn't eaten for about 3 days and all of a sudden their is this carcus but the crab is still in its shell.
Did I do something wrong or what?
2 days ago my choral bandit shrimp shed its shell also made a perfect replacement of itself.
According to the books the shrimp do this if the levels in the water are just right.

 

[nas19320]

Coral Banded shrimp and other shrimps and crabs molt all the time. It part of their growing process.

 

[wrassecal]

They shed their exoskeleton to grow, it's called molting. Normal. I leave the molts in the tank as they are mostly calcium based. HTH