The Crown Estate holds the legal rights to salmon fishing on many Scottish rivers, as well as the harvesting of wild mussels and oysters in Scotland. The Crown Estate Scotland receives an annual rent based on the quantity of fish that is caught each year, currently £27.50 ($31.85) per tonne of sellable fish. In 2018, it received over £1 million ($1.2m) from the organisation Scottish Sea Farms.

However, Salmon Scotland is now calling for an overhaul of the current system so that the money sent to Crown Estate Scotland by salmon farmers is instead invested in coastal communities, as rising house prices are forcing people out of highland and island areas.

Crown Estate Scotland responded: "The seabed is a shared, public space and, like many multi-national businesses, salmon farmers pay to use it for their commercial purposes. Crown Estate Scotland then passes profits to the Scottish Government and Ministers decide how that money is used. From 2017 to 2021, over £28m from Crown Estate Scotland was passed by Scottish Government to coastal local authorities to support COVID-19 recovery projects, economic regeneration and job creation, flood protection, environmental projects, and more."

Queen Elizabeth II's fortune, and what happens to it now