The porpoises at Fjord&Bælt are trained to work voluntarily in various research projects. The animals are trained through the positive reinforcement method. That is, they are rewarded if they do the right thing, but if they do something incorrectly, the reward fails to appear, and they try again. The animals are never punished - neither verbally nor physically. The animal trainers are instructed to work in such a way that the animals can take part in the various projects in a responsible manner.The research gives us knowledge about the porpoise's growth, age, body condition and behaviour. And the various data collected are used to develop methods for research on porpoises in the wild.The guests at Fjord&Bælt have the opportunity to follow the research when the coaches give presentations where they talk about their work. And Fjord&Bælt's staff are always available for questions about the wildlife found below sea level.