The biggest Subnautica mod of them all. Return of the ancients is an up-coming Subnautica mod, adding many new features. This is a showcase video.

The main deal of this mod is adding the extinct gargantuan leviathan skeleton in the lost river, but now it is alive and well in the void and dunes.
Enjoy the video.

Keep in mind, this mod is NOT made by me, This mod is made by the architects of the unknown.
Mods only work on the epic games + steam versions of subnautica, but this mod is not out for the public just yet. When it is finished, everyone will be able to download it for free.

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Mod by: Architects of the unknown
Link: (Not out yet)

Architects of the unknown discord server:   / discord  
Check the place out, there are updates on the mod, events and a nice community.

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Music is all from the Subnautica OST - Simon Chylinski