The El-Adrel IV lifeform was an extremely aggressive entity native to the planet El-Adrel IV. It generated highly localized electromagnetic fields. In 2368, Starfleet Captain Jean-Luc Picard and Tamarian officer Dathon were transported to the surface of El-Adrel IV by the Tamarians to defeat the entity, in the hopes that doing so would establish communications between the two species. The Tamarian language was based upon metaphors in their history and so any outsiders would be unable to learn it without knowing the Tamarian history. By re-enacting the legendary story of Darmok and Jalad against "the Beast" at Tanagra - Picard and Dathon against the El-Adrel IV lifeform - the two were able to successfully communicate with one another.