There are many side quests you can complete as you progress through Hogwarts Legacy. While some of these side quests may come from the citizens of the surrounding burrows, the majority will come from your classmates. One such quest you can complete after completing the first trial is Nerida Roberts. She can’t swim, but she wants nothing more than to pick up a gift the people of the sea left for her. Be a good friend and collect this gift for her. This guide will show you how to complete ‘Mer-ky’ Deeps in Hogwarts Legacy.
‘Mer-ky’ Depths Tutorial at Hogwarts Legacy
Once you complete the first of the trials, you can find Nerida in the dock house on the lake around Hogwarts. There’s a Floo Flame fast travel point there if you’ve already unlocked the area. Once there, Nerida can be found sitting on the edge overlooking the water. Talk to her and she’ll tell you about the gift the Sea People left her in a place called the Leaky Cave.
Gamepur screenshot
After receiving the quest, jump off the dock and swim to the cliffs surrounding the castle. You will find an area that looks like a whirlpool in the water. Interact with the whirlpool and you’ll be thrust into it, appearing in the leaky cave when you exit it. To get the item for Nerida, you must first solve the puzzle at the cave door.
Related: How to Find and Get Beasts in Hogwarts Legacy
Gamepur screenshot
To open the butterfly door in the cave, you need to walk around the cave and use Lumos to attract the butterflies. This is how you complete the Moth Mirrors in the Like Moths to a Frame side quest. Take each of the cave butterflies to the door and deactivate Lumos so they land on the door. Once all three butterflies are in place on the door, the door will open. With the door open, interact with the chest to get the item for Nerida. Return the item to him to complete the quest.
Source