When reptiles are cold

If you like shooting reptiles, they are very easy to work with when they are cold.  They simply can't move.  For example, I photographed these marine iquanas in the Galapagos Islands around nine o'clock when the morning chill could still be felt.  I walked up to this amorous couple and they didn't move a muscle.  They were on an incline of lava and therefore oblique to the plane of my camera.  That meant that I needed to use f/32 to get as much depth of field as possible.  I used a one full second exposure from a tripod, and as you can see this image is tack sharp.  As the sun rose in the sky, the iguanas became more active because the day warmed up.