The MP highlighted the underappreciated role of oceans in climate change mitigation, noting that oceans produce at least half of our world's oxygen and have absorbed more than 90% of Earth's increased heat since 1978. He also mentioned the lack of effective marine protection, with only 8% of English seas effectively protected despite 40% being designated as marine protected areas.

Mr Grayling emphasised the importance of protecting marine environments, highlighting progress on treaties and conferences but stressing the need for accelerated work on marine protected areas. He urged for a complete ban on bottom trawling in marine protected areas and a significant increase in highly protected marine areas by 2030. He also discussed the benefits of restoration projects such as seagrass recovery, kelp regrowth, and coral reef restoration. Mr Grayling stressed the necessity of robust enforcement against illegal fishing activities and advocated for technology use in monitoring and preventing environmental damage.

Emphasised the importance of World Ocean Day, highlighting that more than half of marine species may face extinction by 2100 due to climate change. Mentioned ocean acidification reducing carbonate levels in sea water, affecting organisms like coral and molluscs. Advocated for improved air quality, sustainable fisheries practices, and increased protection through marine protected areas, noting only 8% of oceans are currently protected.

There is not enough understanding of how important blue carbon is or the crucial role that the ocean could play in absorbing and capturing carbon. Discussed the potential of blue carbon to combat climate change, emphasizing the need for better mapping and research. Raised concerns over plastic pollution in the ocean, highlighting the necessity for international action. Mentioned initiatives such as microbead bans and extended producer responsibility schemes.