Rip Curl and Time-Slice Films used GoPro HD cams to build a “’30 camera Array’–a line of cameras firing consistently as surfers ride towards and past it.”

The same team erected an in-water scaffolding in Malaysia’s Sunway Lagoon Hotel to mount 52 full-sized DSLR cameras:

Core77 features more details & photos of the rigs, along with behind-the-scenes videos.
[Via]