https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13957343
The churning of the ocean by gods and demons to retrieve the nectar of immortality; below, Lord Vishnu's avatar as Kurma, the tortoise. Gouache painting by an Indian artist.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use