Acute toxicity of cadmium. Acute freshwater cadmium toxicity data were available for 139 species (65 species with hardness data), with benthos and fish the most predominant trophic groups represented (Fig. 6)
Acute cadmium saltwater toxicity data were available for 88 species (Fig. 7). Toxicity values ranged from 1.1 mg/L for the grass shrimp to 135,000 mg/L for an oligochaete worm .