Below is a walkthrough for the Raiders of the Lost Shark side quest in Tiny Tina’s Wonderlands. To obtain this quest, interact with the reward poster on the outside of Izzy’s Frizzies in Brighthoof.
Talk to Joyful Roy in Wargtooth Shallows
Travel to the objective in the central northern part of Wargtooth Shallows to find Joyful Roy and speak with him.
Find the wreck of the Carole Anne
Travel north of Joyful Roy towards the objective then loot the chest to collect the pearl.
Collect 3 more pearls
Head to each of the 3 objectives and loot the chests to receive the pearls.
Return to Joyful Roy
Make your way all the way back to where you first found Roy.
Return pearls to Chumberlee or give the pearls to Joyful Roy.
If you choose to return the pearls to Chumberlee, you’ll have to fight Joyful Roy and his crew. Alternatively, if you give the pearls to Joyful Roy, you’ll have to fight Chumberlee. Speak with whoever is still standing to collect your loot and complete the quest.