the temperature down. what are the temperatures? once you get below 1,000 feet, even more towards 2,000 feet, the ocean is above freezing because sunlight doesn t penetrate that deep into water so it s incredibly cold. we can understand the affect on the human body but what is the affect on a piece of machinery like the bluefin? it can get more brittle but it s more the pressure that is the thing that affects the strustrum strums more. we have an animation for the pressure that can build up. you can understand. if you ve ever gone scuba diving you can understand pressure just barely. positively. it s been described as an elephant balancing on a postage stamp. it s a pretty interesting visual. what is the impact of pressure at that depth? you want to get the instrument back so you have to have the metals to keep the electronics safe but you ve got to have equal amount of flotation to get them back up to the surface. you want to protect that so that doesn t implode and the