Threatening Skin Disease Plagues Endangered Orcas

Orcas in the Pacific Northwest, specifically the Southern Resident population, are facing a mysterious skin disease, according to a new study. Researchers analyzed photographs taken from 2004 to 2016 and found that the prevalence of lesions on the orcas has been increasing significantly. The cause of the disease is still unknown, but it poses a potential threat to the already endangered population. While the lesions do not appear to increase the risk of death, further research is needed to understand their impact on the orcas' health. Factors such as pollution and boat noise are believed to contribute to the decline of the Southern Resident orcas.