 Effects director Brian Johnson and several other crew members boycotted the production on animal welfare grounds.Camera operator Alan Perry did not remember any of the crocodiles being mistreated; series supervising director Desmond Saunders, however, claimed that more than one specimen died of pneumonia after being left overnight in an unheated tank.Director David Elliott, though filming a different episode at the time, recalled that another dislocated one of its limbs after receiving an electric shock.