Diving or snorkelling in the warm sea in the company of 50-plus bottle-nosed dolphins was akin to the famous scene of Attenborough with the silver-backed gorillas. Don't make the mistake of trying to photograph everything because, like a Japanese tourist, you'll capture everything on film and see nothing! Don't buy an expensive camera. There will be many other divers with professional standard underwater cameras. They are usually delighted to share their photos by email and reveal their similarity to a young Peter Beard or Jacques Cousteau.