Check through your mussels to find any shells that are open, which might indicate a dead mussel. “Just because they’re gaping doesn’t mean they’re dead,” cautioned Moretti.

Recreation facilities at the reservoirs will remain open. "The mussel has not been detected at EBMUD reservoirs, and this proactive measure is intended to protect the public water supply ...

Emily Longman (left) and lab technician Sarah Merolla (right) preparing to sample the mussel bed community at Dillon Beach, California. Credit: Eric Sanford, UC Davis A mussel bed along Northern ...