Oysters?
Not sure they can be farm raised, they grow in salt water. However, if they can be raised in tanks, there could be a lot of benefits. In the ocean raised oyster beds, they are suspended in baskets. These have to be checked regularly for the growth of algae and disease. Also, crabs seek them out as a food source. Indoor farming would eliminate a lot of problems and increase the yield and also decrease labor costs. They wholesale for between $.75 and $1.00 each but the big money comes via ecommerce where a retail price could be sought. Probably worth taking a hard look at this crop.
