In this video, we're not talking about time as the 4th dimension, but instead 4 dimensions of space. Or, if you believe time has to "the fourth dimension", then in this video we are rotating in 5 dimensions :)

The code for this presentation platform can be found here https://github.com/hamishtodd1/hamish... look in units/twoSphereExploration.js and units/threeSphereExploration.js for code specific to this video. And if you want to see an explanation of it, you can become a patreon and see a presentation where I explain how threeSphereExploration.js works!

If you want to play in VR with 4D stuff yourself, you can do that with just your phone and a google cardboard! http://hypernom.com

Sources:
3D fish https://www.turbosquid.com/3dmodels/...
Water    • Free Underwater Background Video Loop...  
Water sound https://freesound.org/people/Kinoton/...
2D fish https://vimeo.com/64895205