Sharkbait is a 
Tediore Shotgun
The Sharkbait has a Pearlescent effect "Chum the Water" - every bullet that hits applies 1 stack of Chum, at 20 stack of Chum the enemy explodes for Damage.
Use your favourite features in-game with our Desktop AppBorderlands 4 Guide
How to Unlock The Pearlescent Sharkbait Shotgun
Weapons
Legendary Loot
Overview
How to Unlock
Unlock Location:
- Progress through the "Takedown at Hadron Abyss" DLC Raid until reaching the Final Boss.
Farm Method:
- Defeat the The boss Child of Terramorphous.
- After the Raid use the Raid Machine to reset the Raid.
- Repeatedly Complete the Raid and Defeat Child of Terramorphous to get Sharkbait.