Samudra manthan
The "Vātaraśanāḥ" Rishis (or Munis) created are also mentioned in RigVeda 10.136, where Shiva drank water/poison, linking to the legend of Kurma and the churning of the Ocean of Milk, referred to as the Samudra manthan. Prajapati then encounters a tortoise (Kurma/Arunaketu) that existed even before he, the creator of the universe, came into being.