(CNN) Without intervention soon, the amount of plastic littering the world's oceans is expected to triple within a decade, a new UK government report warns.

The "Foresight Future of the Sea" report from the UK Government Office for Science said our oceans have seen "unprecedented change as a result of direct human activity and climate change."

It identified the rise of plastic in oceans, along with rising temperatures and sea levels and chemical pollution, as some of the biggest problems the marine environment faces.

The report found that 70% of marine litter is non-degradable plastic which is projected to increase threefold between 2015 and 2025.

Experts suggested the government needed to be more strategic in its approach to the sea in order to successfully halt some of the long-term pollution issues.

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