The first time I ever had the opportunity to dive on the Great Barrier Reef, it was while filming 'Oceans Deadliest' with Steve Irwin. I remember just how awestruck I was by its beauty.

I remember the first time I had sex - I kept the receipt.

My grandfather was Jacques Cousteau, a pioneer of ocean exploration and the co-inventor of scuba diving. Back in the 1940s when he tested out his invention which allowed humans to swim freely in the ocean with a portable air source for the first time in history, very little of the ocean had been explored let alone captured on film.

In the 1950s, as food rationing ended, I remember a plentiful supply of sweets for the first time.

The first time I remember really being excited about a book was 'The Count of Monte Cristo.'

I believe I can even yet remember when I saw the stars for the first time.