It used a Gear VR headset and headphones to provide this experience. Inside the headset was a Samsung device which provided the audiovisual stimulus. This operated very similarly to the cheaper models you can buy on Ebay (see a previous post - Google Cardboard - bringing virtual reality to your classroom) however this more sophisticated set fits to your face without having to hold it, has padding around the eyes and the head phones are quite good quality. This is clearly a more superior virtual reality experience than the Google Cardboard, but I think that is to be expected given the obvious price difference.
The two experiences were relatively short, but were successful in giving the viewer a feeling of being immersed, particularly the First Life presentation which had slightly longer continuous sections in full 360 view. The experiences were part documentary, part virtual reality immersion experience. The Great Barrier Reef experience began with the viewer flying out to part of the reef on a helicopter. By moving your head to the left you could see the back rotor blades and by looking up you could see top rotor blades. The view in front and below was of the reef from above. The footage included of the Great Barrier Reef demonstrated the scale of some of the reef structures and the diversity and number of organisms. The experience has some documentary-style sections where coral polyps and reef building are explained. This provides a short, but effective session aimed to develop the awareness of the viewer about the reef and ends with a call to action for us to act on climate change and protection of the reef.