The Maw of the Deep is a meleeweapon exclusive to the Queen and the Sea DLC that has 3 hit combo with the third hit being a ranged attack. When the ranged attack hits the shark latches onto the target, rooting them and inflicting bleeding. It inflicts critical hits on rooted enemies.
Anything that roots enemies such as The Boy's Axe or Wolf Trap are viable ways to trigger the critical condition.
Notes
If the ranged attack is caught by a spawned Tornado, a fountain of sharks will erupt from it, parodying the titular phenomena of the Sharknado franchise. The additionally spawned sharks from the Sharknado will deal damage upon impact.