That is a key quality of a marine biologist. When you are out at sea for extended periods of time and no where near your list of lab suppliers or hardware stores you have to be resourceful. Here is a cool, simple, smart way to make a monopod to photograph all those strange deep-sea creatures from your next otter trawl.
Not sure how well this would work with a DSLR though. Check out the bottlecap monopod images and more at Toxel.com.