Despite lower prices for fresh and frozen seafood, US retail sales of seafood slid further in November, extending a more than year-long slump in consumer demand.

Last month, the average price per pound for fresh seafood fell 2.5 percent compared with the same period a year ago. Frozen seafood prices eased 1.3 percent, according to new retail scan data from market research firm Circana (formerly IRI) analyzed by 210 Analytics.

"However, at an average price per pound of $9.19