A new survey released for Sustainable Seafood Week reveals 9 in 10 young Australians are concerned about the impact of climate change on our oceans.

Figures show one-third of the world's seafood population is in decline, with 88% of young Aussies concerned about what that could mean for our future generations.

"We can all do more to promote a sustainable seafood industry," says the Marine Stewardship Council's Anne Gabriel.