The Sacramento-San Joaquin Delta in California has been invaded by a species of mussel never before seen in North America.

With salmon fishing barred off the California coast for two years, fishermen have been running historic boat tours ... of California's Sacramento-San Joaquin River Delta. But salmon depend ...

Jamie O’Neill, owner of Seattle-based Dock Street Brokers, said many of California’s commercial salmon fishermen are getting out of the business, selling their permits or simply letting them expire.

The 1,000 miles of waterways of the California Delta surrounds and runs though Stockton and San Joaquin County which makes ...