The story of Krishna and the many-hooded serpent demon Kaliya. Kaliya came to Vrindavan and polluted the waters of the river Yamuna with his poison. This created a great problem for the residents of Vrindavan and their cows. So Krishna foug
This ISKCON preaching slide show from the 70s A Fish is Just A Fish is very famous. It is a powerful preaching message, maybe a little dated now. It is based on Srila Prabhupada's analogy of a fish out of water.
