Liberating: 'I love the feeling of freedom and weightlessness in the water,' Linden says. 'It's such a different sensation. It's very dream-like'

Stunning: The 32-year-old freediver and model can swim to depths of 115ft and uses her skills to promote ocean conservation and education

'Allan said he'd help me straight away.

'We set a budget at the start but then things happened. It ended up being way over but it was worth it.'My friends and family were all there the first time I used it in the water. I couldn't stop smiling. I couldn't believe it was finally happening.'

In some of these amazing images, Linden is seen swimming in Jellyfish Lake on the island of Palau, which used to be connected to the Pacific Ocean.

Since it has been cut off, it has become home to millions of jellyfish because they have no risk of predators. The 12,000 year-old lake is the only place in the world where you can swim safely among them - because the sea creatures have lost their sting.

Linden visited the lake, which is popular with snorkellers, during a two-week trip to the island. She said: 'I had been on a dive that day and had left my tail drying. I always bring it with me wherever I go.

'A man came over to me and asked if I was the mermaid that went in the tail. I said yes and he told me his wife was a photographer and would love to photograph me