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Here is a video of some Dall's Porpoise. We used a GoPro HD Hero2 with a Snake River Prototyping Blur Fix housing, mounted onto a 6 foot pole. Captured the video in 720p at 60fps. Edited with Final Cut Pro X, 30fps slowing video to 50 percent. The last scene was slowed to 25 percent with Optical Flow. Enjoy.
When you say "six foot pole" do you mean you were above the surface like in a boat and hung the camera down betlow the surface? If so your aim is really good the way you turned and followed each individual...good job!