Secret Order of the Crested Lotus ships have been spotted all over the world, including underwater, cataloguing and exploring. Today SOCL has released photos from some of its underwater finds, located in Elhaddad and Ythmum. Both locations have shipwrecks and the Ythmum site has ruins believed to be an ancient coastal city on the original Nautilus coast.
With the photos they have released the locations:
Elhaddad Shipwreck (link) is believed to be a trade vessel that held a sinister cargo.
Underwater Nautilus Ruins (link) are close enough to the coast of Nautilus that caution is advised for divers.