A house-sized clam parked in the Shallows about 310m south of the Lifepod, depth ~40m. Most players' first leviathan encounter — and most players' first death. The Great Jaw isn't aggressive in the chase sense; it's a trap. The shell hangs invitingly open, the inside glints with lithium and other rare drops, and the appendages are slow enough that you think you can dart in and out. You can't. Once you swim past the shell rim, the valves slam, and inside you take a continuous toxin dump until your HP drains.

The correct play: park outside, use the Survival Multitool at maximum reach to pluck loose harvestable nodes from the rim, and never cross the shell line. If you must enter (some lategame players do for the lithium core), use Camouflage + Dash to break for the exit the instant you take the first tick.