E-waste chemicals are appearing in dolphins and porpoises
Phys.org
February 25, 2026
AI-Generated Deep Dive Summary
E-waste chemicals from devices like laptops, TVs, and smartphones are accumulating in dolphins and porpoises, according to a study published in *Environmental Science & Technology*. Liquid crystal monomers (LCMs), critical components of electronic screens, have been found in the blubber, muscle, and brain tissues of these marine animals. This discovery highlights their ability to cross the blood-brain barrier, raising concerns about potential neurological effects on marine life.
LCMs are part of a broader class of persistent pollutants that linger in the environment and pose significant risks to marine ecosystems. These chemicals enter the ocean through improper disposal of electronic waste and industrial runoff, leading to contamination of seawater and sediment. Dolphins and porpoises, as top predators, are particularly vulnerable to bioaccumulation of these substances.
The study analyzed blubber samples from stranded dolphins and porpoises in European waters, revealing significant concentrations of LCMs. These findings suggest that marine animals are exposed to these chemicals through their diet, which includes contaminated fish and other seafood. The researchers also noted that LCMs are structurally similar to endocrine-disrupting compounds, which can interfere with reproductive and nervous system functions.
This research underscores the urgent need to address e-waste management practices and reduce the release of harmful chemicals into the environment. Marine life faces growing threats from pollution, and understanding the impact of these pollutants on ecosystems is critical for conservation efforts. The study calls for further investigation into the long-term effects of LCMs on marine animals and humans, as well as the development of safer alternatives in electronic manufacturing.
The findings also emphasize the importance of proper e-waste disposal to prevent the release of harmful substances into oceans and waterways. As global e-waste continues to grow, scientists and policymakers must work together to mitigate these risks and protect marine biodiversity. This issue not only affects marine life but also has implications for human health, as pollutants in seafood can ultimately impact human consumers.
In summary, the accumulation of LCMs from e-waste in dolphins and porpoises highlights a pressing environmental concern with far-reaching consequences for marine ecosystems and human health. Addressing this issue requires comprehensive strategies to reduce pollution and promote sustainable electronic manufacturing practices.
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Originally published on Phys.org on 2/25/2026