The absolute faithfulness of seahorses was discovered by a group of researchers at the University of Melbourne a few years ago. Among the more than 50 pairs of seahorses kept under observation for 135 days by Laila Sadler and her research team, there was not a single case of cheating. Every morning male and female would meet shortly after sunrise always in the same spot and spend a few moments together. As soon as the pregnancy was over they would pair up again. The only cases of changing partners occurred following the death of the "spouse."