We're having a coffee and chat at 8.30am on a beautiful spring day as the calm Indian Ocean stretches out in front of us.
All that water - a fitting setting considering I am interviewing Lewis Gordon Pugh who sees his life's work as swimming for emphasis.
In May this year Pugh, or the human polar bear as he is called, made headlines for swimming 1km across a glacial lake on Mount Everest.
Nothing like a dip in the tepid waters of the ocean before us.
But this human polar bear is on a mission.
When he first started, it was simply because he wanted to be a "pioneer swimmer".
"It's no longer about that now," says the |soft-spoken, towering athlete.
As he begins talking, his eyes light up and it is evident this is a man who is passionate about his work.
As he embarked on his many swims, he began to see a number of worrying environmental changes around him, Pugh recalls.
He voiced these concerns to his friends. One of them, Clare Kerr, offered up a challenge - it was time to start speaking up publicly about the environment.
And now, with no sense of arrogance, Pugh says: "I am doing what I am meant to be doing in my life."
By swimming in vulnerable ecosystems, he hopes to draw attention to the impact of people's actions.
It's been a remarkable journey and in his autobiography, Achieving the Impossible, he shares his experiences with us.
Pugh was born in England, and moved to South Africa with his family when he was 10 years old.
They travelled by sea and Pugh says of it in his book: "? the journey ? was magical because it was over water and I could see and hear the sea every minute of the day". An early indication of a man's love for the sea and his desire to swim every ocean.
These days, he sees himself as a global ambassador. Pugh has chosen to take a global position so as not to alienate anyone. Despite this, he smiles wryly and adds: "I might have a global vision, but I also have a local heart."
The man we know as an explorer, did not start off on this career path.He qualified as a lawyer at the University of Cape Town and practised maritime law in England. Like his father, Pugh became a member of the SAS - a vocation that exposed him to violence and destruction. It is because of what he encountered as a soldier that, he believes, he is even more driven to promote the protection of the environment.
"There is a direct link to damaging the environment and conflict," he says.
This idea is tied up with Pugh's campaigning for what he terms "inter-national justice". It is all about ensuring people stop living just for today and start living to ensure their children have a "safe, secure and sustainable future".
Today, Pugh is an international campaigner for the fight against climate change. Achieving the Impossible charts his journey so far. It captures the highs, the lows, and offers insight into what drives a man to push the boundaries.
Developing countries have an important voice when it comes to climate change, he believes.
"There cannot be a case where Americans, the English and Japanese live in such a way that those of us who live in the developing world do not have a future," says Pugh.
He cites the case of the Himalayas as an example. The glaciers of the Hindu Kush region provide water to nearly two billion people. These glaciers are rapidly diminishing. Add to that the fact that three countries in that region are nuclear powerhouses, the situation becomes urgent. As the population increases and water supply decreases, there is a real risk of instability.
By ensuring there is |"inter-national justice", Pugh believes we can ensure that what governments are doing in some parts of the world does not cause conflict in other parts of the world.
Pugh is under no illusion that South Africa, given its many social concerns, has other pressing priorities. But the environment is suffering in South Africa. "Rivers are polluted, especially in KwaZulu-Natal, and overfishing is a problem," he cites as examples.
However, he also sees our history as being inspiring. With leaders and peacemakers like "Mahatma Gandhi, Nelson Mandela, Desmond Tutu and FW de Klerk who were part of this country" and shaped its political future with very little open conflict, we have much to draw from. We have to take our lessons from them in our fight against climate change, he says.
"At the moment South Africa is not doing enough, but it is not just South Africa; the entire world is to blame."
But South Africa has a great deal of natural resources available that would make the fight easier.
"It is interesting that Green Peace is talking about how South Africa has renewable resources that could provide solutions to the energy crisis and create jobs while fighting global warming," says Pugh.
"They're campaigning for a move towards renewable energy rather than nuclear and coal energy. I agree.
"South Africa has plenty of sun and wind - why not harness these sources of energy?"
Pugh is confident that every one of us can make a difference even in a small way.
Turning off lights, ensuring electrical appliances are not left on standby, considering more carefully the cars we drive, reducing our air travel, buying local produce and installing energy - saving light bulbs - all go a long way in "ensuring that future generations enjoy a safe and sustainable world".
One of the reasons this explorer is so drawn to South Africa is its many incredible national parks.
Every child in South Africa should be taken to a national park, he says.
"If there is anything you do for your children, do this.
"Most kids around the world have not been to national parks and have not seen the beauty of the environment. If they have not seen it, if they don't know what they've got, they are not going to protect it.
"I will never forget the first time I saw a polar bear. I realised that I may be one of the last people to see one alive. Its habitat is melting away rapidly with climate change.
"Children need to realise this too, and national parks will speak volumes."
Call him an explorer, athlete or polar protector - it all boils down to ensuring a future for our children.