Researcher Fran Broell says there is a lot to be learned about schools of fish in the deep ocean from the way they move. "They move as if they are one, but they don't. There is one fish that starts moving, and all the other ones respond to that movement, but we can't see that because it happens so fast," she said. Broell and her research partners have created a circuit board the size of a postage stamp that can record 500 movements a second. The circuit board is built from 20 dollars worth of parts, from plans available through open source on the Internet, so there aren't even any royalty fees to pay. "Like a Lego kit for people who are interested in electrical engineering" said Broell.