Appalled by the continuing decline of manatees everywhere and the hunting and killing that is the chief cause, the author started an investigation of his own on an inland lake in Guatemala where he believed he had a good chance of observing them. He hoped to build up a case for their protection that the authorities would listen to and act on. He found that the manatees were so scared of man that when they had to surface to breathe they came up in the surface vegetation, hoping to escape notice. But the high point of his watching was the day when two manatees allowed him to swim with them in the lagoon.