Tesco's decision to be somewhat more transparent with its new sourcing policies has revealed that the company is moving forward on sustainability issues with some success. At present, much of the policy is limited to the fresh and chilled pre-packed ranges, ignoring the frozen, ready-meal or tinned seafood, which is unfortunate as these ranges encompass the majority of the seafood sold. 
large range of species and increasing the range of alternative species available to customers. 
Over the last year ASDA has managed to transform a lack of overall policy into a substantial commitment to sustainable seafood procurement and has demonstrated this by de-listing a number of destructively fished species.
The Co-op's policies on sourcing from the marine environment extend beyond seafood into other areas of its business and investments - a breadth of approach no other supermarket has yet developed. 
The overhaul of Sainsbury's seafood policies in both the wild-caught and aquaculture (farmed fish) sectors is one of the more exciting changes within the industry in the past year. Sainsbury's has set clear goals for moving towards 100 per cent sustainable seafood procurement, and has spent time and money supporting sustainability initiatives and promoting better alternatives to customers. 
Waitrose is certainly a leader in the sustainable sourcing of seafood. Over the past 10 years of implementing its sustainable procurement policies, Waitrose has reviewed every species sold with regard to stock levels, management and fishing methods. The retailer maintains a comprehensive 'banned' list and is now confident that it is sourcing all its seafood from the healthiest stocks available.
With 10 years of experience, M&S continues to lead the field in sustainable seafood procurement and to drive sustainability initiatives throughout the seafood industry. The retailer sets clear goals and communicates with an openness and honesty that are lacking in the pronouncements of most other supermarkets.
