Nests 18, 44, 43 and 41 all had crab holes.
Inventory results:
Nest 31: 5 shells, 110 unhatched and 5 pipped dead
Nest 40: 1 shell, 38 unhatched and 7 pipped dead. This nest started with 93 eggs and the day we found it there were 4-5 shells that we put back in the hole.