Reflections on harvest in the sea
- Ascension
Mike asked me the other day when I was able to do coffees this autumn and I explained that ‘sadly’, in November, I can’t do coffees because my work is taking me to the Caribbean. Mike, understandably, was practically sick in the font!
It’s true that I’m very blessed to have the most wonderful job that takes me to some fascinating places. Not only does that sometimes get me out of doing coffees, but it gives me a first-hand glimpse into the extraordinary creation that is life in the ocean.
For example, I’ve twice visited the Island of Ascension – an island just ten miles across, right in middle of the Atlantic, just south of the equator. The second time I visited Ascension, my friend and colleague, Dr Judith Brown, a brilliant marine biologist who had lived there for years, said she wanted to take me to see something special. So we walked for a mile or so across a deserted landscape, over lava crinkles and craters, until we came to a little pool. Jude told me to look carefully in the pool which was full of sweet little shrimp. Not just any shrimp, Jude explained. These shrimp are completely unique and exist nowhere else in the world. They are so rare that they don’t even have a name. I gazed at them, quite mesmerised, by their own tiny world.
The ocean is full of as-yet-to-be-named or even discovered species. There are between 230,000 and 240,000 marine species currently described and classified by science, but this is thought to be about a tenth of the total number of species in the ocean. We know more about the solar system than we know about the deep ocean on our own planet.
- ‘And God created Great Whales’
Not only is the sea full of mysterious life – it plays a vital role in stabilising our climate. It absorbs more carbon than all the earth’s forests and provides half the oxygen in the atmosphere. Without the world’s oceans, the Earth would be 36 degrees warmer. Each night, millions of creatures come up to the surface to feed on phytoplankton and then travel down into the depths during the day. This ‘biological pump’ is vital for locking away carbon. ‘And God created Great Whales’, is written in Genesis. Well just one of these majestic creatures can capture over 33 tonnes of carbon in its lifetime.
- ‘Dominion’
The trouble is that since industrialisation, a mass-scale removal of life in the sea has threatened the beautiful balance in the ocean. When God said to man, ‘Have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth’, he surely meant us to be wise stewards of this extraordinary gift, rather than plundering it to the point of collapse. Human beings are warming the seas, filling them with pollution and rendering them more acidic. But most of all, we are stripping them of the very life that supports us.
Industrial-scale overfishing means that small-scale fishers, like the ones Jesus advises to cast their nets on the other side of the boat, are left with empty nets and lost jobs. It’s not that fishing is bad, it’s that destructive, wasteful, overfishing is bad. A pair trawler in the Channel, with a net many times larger than this nave, can catch as much in a day than a small boat can catch in a year.
The result is that there are fewer and fewer fish in the sea. In the Celtic Sea cod stocks are down by 98% in the last decade. So there are now 1/50th of the number of cod and unsurprisingly, they find it hard to reproduce. (A friend of mine, recently single, and living in rural Wales said that dating in Wales is similarly problematic!)
In the Indian Ocean, fish aggregation devices or FADs, attract tuna underneath a wooden platform a little larger than this sound board above the font. Then a huge net encircles them, gathering them all up by the hundreds of tonnes. Unfortunately, the fish who are attracted to gather under these floating devices are mostly baby tuna. So the future population is being annihilated.
In the Antarctic, the Norwegian krill fishery is scouring the sea for krill to be crushed for its oil. But krill, as well as being a popular health product, is the main diet of those wonderful Great Whales, and recordings in Antarctica of their strange and beautiful song, reveal that the whales are rarely singing now.
- For those in peril on the sea
Perhaps most shocking is the way that human beings are treated far out at sea on these factory vessels. Human rights abuses are rife in the global seafood industry. When we sing ‘for those in peril on the sea’, we should spare a thought for those who have been forced or trafficked to spend months, if not years, away from their families, working in miserable conditions.
- “Be of good courage, and he shall strengthen your heart, all ye that hope in the Lord”.
But I want to leave you with messages of hope. NGOs such as Blue Marine are making good progress in tackling overfishing and securing more protection for the sea. I said I’d twice been to Ascension. The first time I went there in 2017, its waters, an area nearly the size of France, were being fished by a longline fleet whose 80km lines of baited hooks were not only catching tuna, but sailfish, swordfish, sharks, turtles, seabirds. This longline fleet also had a poor human rights record. We persuaded the British Government and the Ascension Island Government to create a vast marine protected area around Ascension. So the second time I went to Ascension five years later, I stood on the shore and looked at the horizon and knew that as far as I could see, times by about 75 (because of the curvature of the Earth) was completely free from industrial fishing. Last spring, more green turtles nested on Ascension than any time since records began in the 1970s.
Through its ‘blue belt’ initiative, Britain has protected over four million square kilometres of ocean. In December 2022, 196 countries committed to protect at least 30% of land and sea by 2030. Political leaders around the world – particularly in the Caribbean, hence my very necessary visit – are making great progress in protecting 30% of their waters – and we are doing all we can to help them. In January 2026, a global agreement was ratified to protect the high seas – the 2/3 of ocean beyond national jurisdiction – an extraordinary feat of international cooperation at a time when that is rather thin on the ground.
I personally get a lot of hope from my colleagues at Blue Marine; 70 brave, determined, thoughtful people, who dedicate every waking hour to trying to protect and restore life in the ocean through legal, education, media, science, investigations and policy initiatives.
But most of all, I get hope from ‘the wonder of His works’ – not only observed in the beauty and complexity of life in the ocean, but in the power it has to bounce back.
When an area, once scoured by trawlers, is left to recover, first the habitats come back, then the small creatures, then the apex predators, until, after a few years, it is once again teeming with life – God’s creation allowed to flourish as He intended.
The vast and mysterious ocean, which covers nearly ¾ of our planet, is so exceptionally beautiful. It is vital that we nurture it and maintain its precious balance – for the sake of all our futures. To quote not God, but one of his best representatives on Earth, Sir David Attenborough: ‘If we save the sea, we save our world.’
Clare Brook, 20 September 2026
Further reading/watching:
The 2025 film OCEAN with David Attenborough
Stephen Fry and Theo James short film: https://www.youtube.com/watch?v=jDMW6fPB0JA