Balahara

Desert-dwelling leviathans that use their supple, serpentine bodies to create quicksand traps. Weak against sonic bombs when they're submerged.

Desert-dwelling leviathans that build carapaces out of the fulgurite formed by lightning strikes. They use their flexible skeletons and serpentine bodies to create quicksand traps for unwary prey. Inside their mouths are multiple eye-like sensory organs. The mucus they secrete contains luminous bacteria and is believed to aid visibility while they are submerged and other low-light conditions like sandstorms.

The interior of a Balahara's mouth is a soft target that can be exploited if you strike right after it expels mucus. Since they rely on heightened hearing while submerged, sonic bombs or screamer pods—obtainable from Baunos—are highly effective. Sometimes the large monster you're hunting will get sucked into a Balahara sand pit...but there's nothing stopping you from going after it.