15:00 Sally-Ann Hart (Hastings and Rye) (Con)

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.

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.

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.

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.

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.

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.

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15:14 Theresa Villiers (Chipping Barnet) (Con)

As we have heard, the ocean covers 70% of the Earth’s surface and is the largest carbon sink on the planet. To take just one example, salt marsh and seagrass habitats can store and hold massive amounts of carbon for thousands of years, so there is huge potential for ocean-based solutions—so-called blue carbon—to play a key role in delivering net zero and protecting the climate from disaster. At the same time, well-managed blue carbon projects can help deliver levelling up through the creation of new high-paying, high-quality jobs in coastal communities.

The massive potential of blue carbon was highlighted in the report, “The Ocean: Turning the Tide on Climate Change”, published last year by the APPG for the ocean, of which I am a member. In it, we pointed out that we cannot hope to succeed in our ambitions on combating climate change without using ocean and land-based carbon removal solutions, so we need better mapping of the blue carbon habitat within the UK’s exclusive economic zone. We also need more research, more data and a better understanding of the capacity of the marine environment to absorb and store carbon. That goes beyond salt marshes and seagrass to include ideas such as seaweed cultivation and ocean alkalinity enhancement.

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15:20 Chris Grayling (Epsom and Ewell) (Con)

Those are the challenges. None of them will be easy, but they are challenges that we have to meet. As a global community, we cannot see the ocean continue to deteriorate and decline. My right hon. Friend the Member for Chipping Barnet is absolutely right about plastic. I happen to believe that before too long, we will end up harvesting it from the oceans. The plastic needs to be removed, but we may well find that it has positive uses, now that technology is moving on, in helping us to combat climate change through a move away from conventional fuels, for example. We may well end up having a positive reason to take that plastic out of the ocean, but we should certainly stop putting it in. We should be taking all the steps that we can to avoid the further pollution of the ocean and further degradation of marine habitats.

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15:36 Patricia Gibson (North Ayrshire and Arran) (SNP)

The ocean occupies over 70% of the planet’s surface area and produces at least 50% of the world’s oxygen. It is a hugely significant force in mitigating climate change. Despite that, its role is most often considered as passive rather than active, but it has a significant role to play in slowing down the rate of climate change. Since 1978, over 90% of Earth’s increased heat and 40% of carbon from fossil fuels have been absorbed by the ocean. In addition, it is predicted that the ocean has absorbed between 30% and 50% of all carbon dioxide emissions caused by human activity, which makes it the biggest carbon sink in the world, as we have heard today.

The impact of ocean acidification is not uniform across all species, but a more acidic environment will harm marine species such as molluscs, corals and some other varieties. Marine organisms could also experience changes in growth, development, abundance and survival in response to ocean acidification. Most species seem to be more vulnerable in the early stages of life. Juvenile fish, for example, may have trouble locating a suitable habitat. Research suggests that ocean acidification will also be a driver for substantial changes in ocean ecosystems this century. Those changes may be made worse by the combined effects of other emerging climate-related hazards, such as the decrease in ocean oxygen levels—a condition known as ocean deoxygenation—which is already affecting marine life in some regions. Ocean acidification also has the potential to affect food security, coastal protection, tourism, carbon storage and climate regulation because more acidic oceans are less effective in moderating climate change. To reduce the impact of ocean acidification, we need to improve our air quality, develop sustainable fisheries management practices and sustainably manage habitats, as well as establishing and maintaining marine protected areas, about which we have heard a lot today. Currently, only around 8% of our oceans are protected. We need to do more, but on a global and international basis.

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15:44 Alex Sobel (Labour)

On World Ocean Day, we acknowledge this year’s theme of “Planet Ocean: tides are changing” as a call to intensify our efforts to understand, preserve and harness the power of our oceans. Our vast oceans hold the key to so much: biodiversity, marine ecosystems, climate change mitigation, food security, renewable energy and the future preservation of our planet. The role of our oceans in combating climate change is grossly underappreciated. More 70% of our planet’s surface is made up of ocean, which produces at least half of our world’s oxygen. Since 1978, the ocean has absorbed more 90% of the Earth’s increased heat and 40% of fossil fuel emissions, making it the world’s largest carbon sink. However, these watery giants are seldom acknowledged as active players in the fight against climate change. We need to draw focus to the power of blue carbon habitats, such as saltmarshes, seagrass meadows and mangroves. We heard extensively from other speakers on those issues.

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15:49 The Parliamentary Under-Secretary of State for Environment, Food and Rural Affairs (Trudy Harrison)

Marine life is important. A safe, healthy ocean underpins our lives and our economies and my hon. Friend the Member for Hastings and Rye was correct to say that more must be done. More is being done, but it will not be easy. We have to tackle the triple planetary crises of biodiversity loss, climate change and pollution. Without action, plastic pollution entering the ocean is set to triple by 2040. Over 1 million species, including 33% of reef-forming corals and one third of marine mammals, are predicted to disappear entirely over our lifetimes. Meanwhile, 33% of our global fish stocks are over-exploited.

We know that many small island—or, more appropriately, big ocean—developing states are bearing the brunt of the challenges from climate change and plastic pollution. They have been raising the alarm for decades while contributing little to the problem. Here in the UK we are seeing the effects, including estimated losses of 85% of our saltmarsh and 92% of our seagrass habitats in the last 100 years.

We also know that biodiversity loss and climate change are inextricably linked. With a 2° rise in global temperature, a predicted 90% of coral reefs will be lost, so we continue to work to raise ambition on ocean-climate action across the United Nations framework convention on climate change, to fill key evidence gaps and to build capacity around the world to protect and restore blue carbon habitats. I hope my hon. Friend the Member for Hastings and Rye will recognise the work that is being done. She called for more research and development, and for better understanding, which is what we are working towards.

Our £500 million blue planet fund is supporting developing countries to address biodiversity loss and climate change by tackling marine pollution and supporting sustainable seafood in some of the world’s most important but fragile ocean environments. Just this morning, Lord Benyon hosted a roundtable to understand how public and private sector investment can come together to deliver a blended finance solution through the excellent global fund for coral reefs programme, which supports the ocean, reefs and climate-vulnerable communities.

Hon. Members referred to technologies, and the UK is a global leader in offshore wind. Through our offshore wind environmental improvement package, which is currently before the House as part of the Energy Bill, we are supporting the drive for net zero and energy security. The package will support the rapid deployment of offshore wind while protecting our precious marine environment through an innovative set of measures, including new environmental standards for offshore wind infrastructure, measures to enable strategic compensation and the establishment of a new marine recovery fund.

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16:07 Sally-Ann Hart

I thank my right hon. Friend the Member for Chipping Barnet (Theresa Villiers), who highlighted the need for more research and data, the issue of plastic pollution and the leading role that the UK plays globally in combating that. I thank my right hon. Friend the Member for Epsom and Ewell (Chris Grayling), who highlighted the importance of ocean-based solutions to climate change, the acute need to protect, restore and enforce our marine protected areas, which also protect our UK fishing livelihoods, and the role that the UK can play globally in this.

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