This one's a no-brainer. Each shot more beautiful than the next, it explores who lives on, in or around the Great Barrier Reef. Irish diver and marine biologis Paddy Colwell likes to kick his fins off and go for a stroll on the ocean floor around Osprey Island.
Bonus points for anyone who can guess the former Heartbreak High and Blue Heelers actor who narrates it.
4.5 stars out of 5