Alex asked: "Is that also a Seacam tripod?"
Yes, Alex. Handy little thing as it is very light and takes up hardly any travel space. The three rods that serve as legs unscrew and then all you have is the small semi-sphere that has the ball head adapter. You need to find a flat bit of rubble or sand to set it on, as legs don't telescope like a topside tripod, but nice addition to travel kit.
Tom said: "I think that at least some research applications would involve 24h monitoring or may need VCR recording capability. Does the finder camera work in near-darkness and is the video feed compatible with NTSC VCRs?"
I don't know about "near-darkness", but for sure records in very low light according to my admittedly non-scientific observation. As for the video feed, I think so Tom. If you look at the bottom of the monitor in the UW shot you'll see two more ports that are capped off (S6 connectors). One is for a separate remote trigger, in case you don't want to use the button on the monitor to fire the shutter. The other one is a video output designed for video goggles (topside use only). I have to believe that could feed to a VCR just as easily. It seems like a diver could set it up UW, and the video-out cable could lead to a VCR on the surface. Or for that matter, the whole monitor could go to the surface as it works up to 50-meters away from the housing. I'm certainly not an expert in the video end of things, but it seems that would be the case.