Aquarium spokeswoman Ariane Vieregge in Oberhausen said Tuesday that Paul seemed fine when checked on late Monday night but was found dead in his tank Tuesday morning.
She says that it was normal for an octopus of his type to die at that age and that he had died of natural causes.
Paul correctly predicted the outcome of all seven of Germany's games plus Spain's victory over the Netherlands in the final.
More on the legend that was Paul:
World Cup Octopus Oracle to Spain? Nein
Paul the Octopus Retires
Octopus Oracle Hangs it Up after World Cup