Author: Michael Steinke, Senior Lecturer, Marine Sciences, University of Essex

Workers remove massive accumulations of _Sargassum_ seaweed from a Caribbean beach in the Riviera Maya near Cancun, Mexico, in June 2025. elena.tres/Shutterstock Seaweed piling up on a beach might look harmless, but as quantities begin to rot, they can release gases that are toxic to people. In recent years, two people and several animals (including […]