An interesting Long Read, care of the San Francisco Chronicle.
Which whets ones' appetite for what may be down there...
Link: https://projects.sfchronicle.com/2019/the-fishermans-secret/
What is insane is that having found it he can't recover it, and if he could it would very likely be lost to endless litigation by government and corporations that have no more legitimate interest in it than thieves. It underlines why most of the worlds treasures when found go unreported...