Which state imposes a quarantine on mussels from May 1 to October 31?

California imposes a quarantine on mussels from May 1 to October 31 due to concerns about the potential for harmful algal blooms, which can lead to shellfish contamination. This seasonal restriction is part of the state's public health effort to protect consumers from illnesses associated with consuming contaminated shellfish. During this period, the risk of biotoxins in mussels is significantly higher, necessitating strict controls on harvesting and distribution to ensure public safety.

In states like Florida, Louisiana, and New York, while they may have their own regulations regarding shellfish harvesting, they do not specifically impose a quarantine on mussels during this particular timeframe like California does. Understanding the specific regulations in California highlights the importance of regional environmental health policies that respond to local ecological conditions and public health risks.