Mikko has posted this video on the forum which he describes as:

“Scuba diving the magical kelp forests of California Channel Islands. Close to the California mainland, yet worlds apart, Channel Islands encompasses eight remarkable islands (Anacapa, Santa Cruz, Santa Rosa, San Miguel, San Clemente, San Nicolas, Santa Catalina, and Santa Barbara) and their ocean environment, preserving and protecting a wealth of natural resources. This is a journey to the dreamlike underwater habitats of San Clemente and Santa Catalina islands and their ever dancing kelp forest. Isolation over thousands of years has created unique animals, plants, and archeological resources found nowhere else on Earth and helped preserve coastal southern California as it once was. Shot on location, on the liveaboard Vision of Truth Aquatics in September 2010.”

The video was shot on Canon 5Dmk2, shot on (M) at ISO640 or at ISO125 with manual WB. Ikelite housing, 8” dome, 8001.22 flatport; Sigma 15mm FE, Canon 24mm and 50mm primes. Ambient light only. Tripod - which in addition to allowing shooting steady[er] footage also unexpectedly worked as underwater “steadycam” stabilizing otherwise unstable housing during [some] free floating parts. Post production in Premiere CS5; “usual” tweaks to brightness and contrast.