There is a goldmine atmosphere in the Azores: in the crystal-clear water live 21 species of whales and dolphins. Their instinct for play and their empathy for humans make them a fantastic source of capital. Several whale-watching companies have been founded in recent years - and swimming with dolphins has become one of the most sought-after tourist attractions. But there are also critical voices, such as the biologist Maria de Cruz, who is attempting to find out how much stress it causes the marine mammals.
