Paleonet: video of sediment working by deposit feeders

[James Farlow]

Many years ago I saw a video showing how benthic invertebrates in shallow water mudflats extensively rework sediment. The video was a time-lapse film, in the course of which the muddy bottom looked like a colossal writhing mat of spaghetti as sediment was squirted out the nether ends of animals.

Does anybody know if DVD or other format videos of this kind of thing are commercially available? I would like to get one for a class I'll be teaching in 2011.

thanks