Simmonds was a brilliant marine biologist, obsessed with discovering the principles of the telepathic control of marine life. To discover it he created a Telepathic Sending Device and created a new identity to start his career as a pirate. Aquaman and Mera follow him to his hideout, Marauder is warned of their arrival by a school of dolphins that he used as his guards. Fearing arrest, he sends a whale on a collision course with the ship to destroy the drugs, giving him time to escape. Aquaman made a lot of mental effort, to finally get control and saves the drugs as well.