World Ocean Day

Debate between Sally-Ann Hart and Theresa Villiers

Thursday 8th June 2023 Westminster Hall

[Sally-Ann Hart (Hastings and Rye) (Con)]

I beg to move,

That this House has considered World Ocean Day.

It is a pleasure to speak under your chairship, Mrs Latham. Our ocean, our largest ecosystem, is a precious natural resource and for too long we have taken it for granted and somewhat abused it. Over and illegal fishing in some parts of the world, pollution, including by chemicals, plastics and nutrients, and overdevelopment along coastlines have all contributed to our ocean not being as healthy as it should be. There is an urgency to tackle global climate change, and given the right focus, support and investment, the ocean is one of our best and most cost-efficient nature-based solutions. As an island nation, our national seas also have huge social and economic value for the UK and especially for our coastal communities. The ocean is our bright blue hope.

Today is the 31st anniversary of World Ocean Day, which gives us the opportunity to highlight and support the implementation of worldwide sustainable development goals and to foster public interest in the protection of the ocean and the sustainable management of its resources. This year it specifically raises awareness and supports the goal and the commitment from global leaders to conserve at least a third of our land, water and ocean by 2030, known as 30x30. It also builds on the high seas treaty agreed in March this year by a number of nations to protect the world’s biodiversity in international waters.

The historic high seas treaty took 10 years of negotiations to reach agreement. It aims to safeguard and recuperate marine nature and provides the ability to more easily realise the target of establishing 30% of the global ocean as marine protected areas by 2030. The treaty also strengthens governance of the world’s ocean by providing the framework to manage the ocean and sustainably use its biological resources. Prior to the treaty, there was no means for nation states to declare marine protected areas beyond their national jurisdiction. The new treaty supports a holistic ocean governance framework as a means to implement the obligations to protect and preserve the marine environment, as included in the United Nations convention on the law of the sea.

That is an important step as the ocean covers 70% of the planet’s surface area and produces around 50% of the oxygen we breathe. It has a hugely significant role to play in slowing down the rate of climate change. Since 1978, more than 90% of the Earth’s increased heat and 40% of carbon emitted from burning fossil fuels have been absorbed by the ocean. Furthermore, it is estimated that the ocean has absorbed between 25% and 30% of all carbon dioxide emissions caused by human activity, making it the largest carbon sink in the world.

The sea is home to most of our biodiversity. According to the United Nations, 3 billion people globally rely on the ocean for their livelihoods, and around 200 million people are employed either directly or indirectly in related industries. However, the UN also states that carbon emissions from human activity are causing ocean warming, acidification and oxygen loss.

A debate about the ocean could cover many topics, including plastic, sewage, chemical or nutrient pollution, marine protected areas, fishing, and renewable energy opportunities and risks. I am sure that some hon. Members will discuss those today. I want to focus on blue carbon and ocean-based solutions to climate change, which, worryingly, are disappearing and require urgent global restoration and protection. We also need to conserve and use ocean resources sustainably, as healthy oceans and seas are essential to human existence and life on Earth. For too long our ocean has been the missing part of our path to net zero. It is essential that Governments across the world take rapid action to increase the ocean’s critical role in tackling climate change.

Our oceans offer significant solutions that can mitigate and combat climate change. It is predicted that blue carbon ecosystems could sequester and store around 2% of UK emissions per year. There is huge potential lying beneath our waters, which have yet to be fully realised.

According to estimates from the Office for National Statistics, the UK’s salt marshes and subtidal muds and sands alone captured at least 10.5 million tonnes of carbon dioxide equivalent in 2018—the real amount could be as much as six times higher. That carbon sequestration, according to the ONS, is of significant economic as well as environmental value—valued at more than what is earned from exploiting our oceans for oil and natural gas.

Let us not forget that our coastal salt marsh areas can help protect against flooding from sea level rise if properly restored, maintained and managed. Seagrass meadows provide among the most productive ecosystems in the world. An area the size of a football pitch can support more than 50,000 fish and more than 700,000 invertebrates, which is good news for our marine habitats and fishing communities around the UK. One acre of seagrass can sequester 740 lb of carbon per year, or 83 grams of carbon per square metre, which is the same amount emitted by a car travelling 3,860 miles.

[Theresa Villiers (Chipping Barnet) (Con)]

Does my hon. Friend agree that there is not enough understanding of how important blue carbon is or of the crucial role that the ocean could play in absorbing and capturing carbon? It is, therefore, great that we have the opportunity to debate it today.

[Sally-Ann Hart]

Yes, I completely agree with my right hon. Friend. One issue is that we do not yet have enough data and research to truly evaluate the amazing role that blue carbon can play.

UK coastal habitats such as seagrass and salt marsh provide an estimated £48 billion of economic benefits to society, despite occupying only 0.6% of the total land area. Based on available data, the Office for National Statistics values the UK’s marine natural capital assets at £211 billion, so protecting and restoring the UK’s marine natural capital assets preserves more than the environment. It has value for people and the economy.

Maintaining and, more importantly, restoring and improving marine ecosystems to sequester carbon is vital in mitigating climate change. Fully restored, our coastal ecosystems could capture emissions equivalent to one third of the UK’s 2028 emissions and save an estimated £6.2 billion in spending on artificial flood defences by 2050. It is essential that the UK Government take further measures that protect and restore our marine areas, ensure greater research and provide more sustainable funding for all types of blue carbon and carbon dioxide removal. But no Government can fund entirely the actions needed to unleash the full power of nature. They need to look carefully at how they can encourage and facilitate private sector funding.

There are new fledgling organisations such as the social enterprise Bright Tide, which was founded by Harry Wright. Bright Tide is doing a sterling job in working with businesses to address urgent climate and biodiversity challenges around the world. I ask the Minister to outline what the Government are doing to recognise and facilitate funding to protect ocean nature-based solutions.

Also, will the Minister update the House on the measures that the Department for Environment, Food and Rural Affairs has taken to ensure that blue carbon habitats are restored, increased and properly protected? Our ocean is incredibly important to coastal communities such as mine—beautiful Hastings and Rye—because many livelihoods, from fishermen and tourism to aquaculture and renewable energy, depend on a healthy, clean and functional coastal environment to ensure long-living and sustainable industries. Without careful planning and review of impacts from human activities, both the environment and livelihoods are at risk.

I chair the all-party parliamentary group on coastal communities and the all-party parliamentary group for the ocean. Coastal communities and our national seas are interlinked—co-dependent. The APPG for the ocean’s first inquiry, into blue carbon and ocean-based solutions to climate change, produced an excellent and comprehensive report, “The Ocean: Turning the Tide on Climate Change”, and three of our eight recommendations were echoed in the Government’s recent environment improvement plan. They include our recommendations to remove trawl or dredge zones, which can destroy marine ecosystems and disturb seabed carbon stores, from UK MPAs; create highly protected marine areas; and include more aspects of marine carbon storage and sequestration, specifically seagrass and salt marsh habitats, in the UK greenhouse gas inventory.

Our report also highlighted that investing in coastal and ocean-based solutions can considerably boost industry and the economy in coastal areas. As an MP for a coastal community and as chair of the APPG on coastal communities, I recognise at first hand the solutions that the ocean can offer in mitigating and combating climate change. I also recognise the added value, huge benefits and potential that ocean-based solutions can have for coastal communities in creating new skills and jobs in tourism, ecotourism, seabed mapping activity, the renewable energy industry, environment and ecology, aquaculture, fishing and so on. Nature is the most cost-effective solution in combating climate change, as well as providing added value. We must unleash her power.

The report also highlighted that blue carbon and ocean-based solutions are often neglected in conversations about climate change, despite the fact that the destruction of marine habitats such as seagrass—the wonder grass—may be of greater consequence than land-based destruction such as deforestation. Why are they overlooked? Part of the reason is the lack of understanding, research and data. Certain types of ocean-based solutions, such as those that could occur in the open ocean or seabed, are even less understood and require greater mapping to understand the clear benefits. It is time to review our ocean, not only as something that needs protecting, but as a useful tool—a living, breathing organism that can help us tackle climate change.

Finally, with the increasingly diverse uses and potential uses of the ocean and the growth in areas designated for marine conservation, there are clearly growing spatial pressures on our ocean—spatial squeeze. That may have an effect on our more traditional industries, such as our fishing fleets. I know that the fishermen of Hastings and Rye are concerned about that. We must ensure that offshore renewables—windfarms and tidal stream energy for example—blue carbon habitats, marine protected areas, fishing grounds, aquaculture, cables, oil and gas all coexist, where possible, so that there is space for all without detriment to traditional industries such as fishing or to the marine environment. There is an argument to be explored for a new approach to marine spatial planning that involves the co-management of our national seas and greater accountability for regulators. I would be keen to hear the Minister’s thoughts on that.

By protecting, researching and investing in ocean-based solutions and blue carbon habitats, the UK can ensure that our net zero targets are met, that coastal communities can benefit from significant opportunities and that the ocean becomes an active player in climate change mitigation. We all need to work together to ensure that that happens.