By then , he was a very old crocodile , and one of the largest and tamest captive crocodiles in existence .
After many years , Gomek died of heart disease on March 6 , 1997 .
By then , Gomek was a very old crocodile , and one of the largest and tamest captive crocodiles in existence .
After many years , Gomek died of heart disease on March 6 , 1997 .