Fishing companies are hoping to "double" their catches of krill — tiny animals that sustain the Antarctic Ocean — to feed the fish farming industry.
Six fish farming companies in Scotland given government handouts of over £10 million have made profits of £926 million since 2010.
At least nine million fish have been killed by diseases, botched treatments, poor handling and other problems at salmon farms around Scotland since 2016.
The £2 billion salmon farming industry marketed around the world as Scottish is virtually all owned by investors in Norway, Switzerland, Cyprus, Canada and other countries.
Salmon farmers with the worst records on animal welfare have been named and shamed by campaigners hoping to provoke reforms.
The diseases, damage and infestations suffered by hundreds of thousands of caged salmon in Scotland have been exposed by more than 300 photos released by the Scottish Government.