National Geographic's fantastic playlist of 360 degree immersive videos that can be experienced with or without a virtual reality viewer. Recently, National Geographic added another excellent video to that collection. That video is Journey Into the Deep Sea.
Journey Into the Deep Sea is a nine minute underwater tour of the coral reefs around Palau. In addition to the fantastic imagery of fish, sharks, and manta rays the video includes little "pop-up" facts windows throughout the video. You can view the video in a VR viewer like Google Cardboard or simply watch it in your web browser. If you watch in the web browser on your computer you can click on the video to pan and zoom through it. When you watch the video in a VR viewer your movements will reveal different aspects of the video.