A lot of discussion about heavy metals found in sharks and shark products for human consumption is available on the Internet.
Discovering actual EU Rapid Alerts for toxic sharks is something to pay attention to - what's in your shark meat?
Notification date: 05 July 2011.
Notification from: Italy.
Notification Description: Mercury in frozen blue shark steaks (Prionace glauca).
Origin: Portugal.
Distributed to: Italy.
Amount: 832 kg
Analytical Result: 3,51 +/- 0,31 mg/kg – ppm
Action taken: official detention.
Notification date: 26 April 2011.
Notification from: Poland.
Notification Description: Cadmium in frozen blue shark steaks.
Origin: Spain.
Distributed to: Poland.
Analytical Result: 0.081 mg/kg – ppm.
Action taken: withdrawal from market.
Notification date: 15 April 2011.
Notification from: Italy.
Notification Description: Mercury in frozen shark slices.
Origin: Thailand.
Distributed to: no distribution ( border rejection ).
Action taken: official detention.
Notification date: 14 April 2011.
Notification from: Spain.
Notification Description: Mercury in ‘white dogfish’.
Origin: Senegal.
Distributed to: no distribution ( border rejection ).
Analytical Result: 2.1 mg/kg – ppm.
Action taken: official detention.
Notification date: 14 April 2011.
Notification from: Spain.
Notification Description: Mercury in ‘white dogfish’.
Origin: Senegal.
Distributed to: no distribution ( border rejection ).
Analytical Result: 1.3 mg/kg – ppm.
Action taken: official detention
Notification date: 07 March 2011.
Notification from: Italy.
Notification Description: Mercury in frozen slices of blue shark (Prionace glauca).
Origin: Spain.
Distributed to: Italy.
Analytical Result: 1.42 mg/kg – ppm.
shark diving, shark conservation and things we find "amusing." 
