I recently visited the desert and, uh...
I think the death worms might be a bit buggy with water.
There as a river that crossed the desert and in the water where a bunch of death worms just floating there spinning in circles. If you hit them, they'd snap out of it, but move a bit away and they'll start spinning again, making them super easy to kill.
On the same notes, dragons are also kinda easy to kill in water because they'd swoop down to grab you, get in water, then slow down a lot letting you whip out your bow and snipe one down at your leisure. The dead body tends to be harder to loot since it ends up underwater, but I feel that's a minor inconvenience for being able to kill a dragon with a bow and a bunch of arrows.