Obviously “deaf leviathan” makes no sense for a name, but hear me out!
Since when you play Subnautica 2, you can speak, what if it can hear you?
How it would work:
Considering you can actually talk to friends in game, you’d also be able to speak in single player so it can hear you. As well, it would reside in dark areas, and be similar to the Tar Eel in some way, as it would be pretty big, it hides. Its really difficult to see it, but once you make a noise, if its louder than a certain threshold, it would screech, lunging at wherever the noise was.
And yes, this means that the one upgrade to silence the tadpole makes sense now! Now, lets say your fast enough. If you make a noise, and immediately move out of the way without making another noise, it would attack nothing.
Cool idea to use for story: What if you have to set up a trap that triggers and activates the leviathan, causing it to attack a wall that crumbles down as it goes back to its hiding place?
Thanks for reading!