| Abnormality Disease | Prevalence | Stressor | Locality |
|---|---|---|---|
| Decreased hatch | N/A | Chlorine | N/A |
| Embryo mortality | N/A | Mixture | N/A |
| Embryo mortality | N/A | Chlorine | N/A |
| Mortality | N/A | Chlorine | N/A |
| Pugheaded | N/A | Genetic or environmental factor | Lond Island Sound |
| Pugheaded | N/A | Unknown causal agent | Nantucket, MA |
| Pugheaded | N/A | Genetic or environmental factor | Chesapeake Bay |
| Pugheaded | N/A | Genetic or environmental factor | Chesapeake Bay |
| Reduced growth | N/A | Chlorine | N/A |
| Skeletal malformations | N/A | Chlorine | N/A |