In the end of season 3 episode 2 of the Mandalorian,
Heavily spoilered since its a new episode
when he's at the living waters of mandalore, in the mines, he apparently drops into the water. When Bo Katan goes to save him, she has to go some distance to find... he's apparently just taking a nap underwater. There's no tentacle monster or other threat and Bo just underwater jet packs him out. Did he just take a bad step, and... roll the whole way down?