Sponges may cut methylmercury contamination in marine food webs by more than 50%

Astrobitica June 25, 2026 (Last updated: June 25, 2026) 1 minute read

Marine sponges may significantly reduce methylmercury contamination in marine food webs, according to a new modeling study by researchers at Helmholtz-Zentrum Hereon. The study indicates that the sponges’ unique feeding behavior helps lower methylmercury levels, potentially decreasing contamination in fish, and is published in the journal Biogeosciences.

Marine sponges may play an important, previously underestimated role in reducing methylmercury contamination in marine food webs. In a new modeling study, researchers at Helmholtz-Zentrum Hereon showed that sponges can significantly influence the spread of this environmental toxin through ecosystems. The findings suggest that the animals’ unique feeding behavior helps reduce methylmercury levels and may lower contamination in fish. The study is published in the journal Biogeosciences.