Invasive Mussels Trigger California Emergency

California faces an urgent threat from invasive golden mussels, discovered in 2024 and rapidly spreading through water systems. Their proliferation necessitated a costly 30-day chemical eradication campaign totaling $3 million in Kern County. The species' alarming reproduction rate, with a single female producing over a million eggs annually, has prompted Kern and San Joaquin counties to declare local emergencies as of April 28, 2026.

This situation underscores a nationwide crisis, with invasive species costing over $100 billion each year. The U.S. Register of Introduced and Invasive Species lists nearly 15,000 records of non-native species. Efforts to control these threats range from cleaning boats and managing firewood to public appeals for identification and reporting, reflecting a growing understanding of the significant economic, environmental, and health impacts.