There are at least 2 bands named Sperm Whale: One of them is a dark house/breakbeat/experimental duo from Warsaw, Poland, formed in 2011 by Jeremi Dziedzic and Filip Stachnik. They are now working on their debut concept album Pweisfdum. The second one is: 1/2 of the SmAsh BroThers, Zen-Rhymes Ninja (Sperm Whale), and his partner in Lyrical Assainsionry Cal Popadopolis The Cain Marko Of fLow.