Lead

Lead is an undesirable contaminant of food because of a number of harmful effects it has on health. Its levels in seafood are controlled by legislation in the EU.

Seafood	Maximum Permitted Level (mg/kg wet weight)
Muscle meat of fish, or whole fish when the fish is intended to be eaten whole	0.30
Crustaceans: muscle meat from appendages and abdomen. In the case of crabs and crab-like crustaceans (Brachyura and Anomura) muscle meat from appendages	0.50
Bivalve molluscs	1.5
Cephalopods (without viscera)	1.0

For more details, see the relevant legislation: 1881/2006.