To get into the Sea of Drowned Love, follow the below instructions:
- Talk to Archaeologist Burnar on Freedich Isle
- Accept the quest 'Shipwreck Omens'
- Make your way to the quest location, south of Freedich Isle
- Talk to Earthbound Neuma to complete 'Shipwreck Omens'
- Talk to Earthbound Neuma to accept the quest 'Witch's Song'
- Talk to Earthbound Neuma to complete 'Witch's Song'
- Receive Sealed Tsunami Stones as the quest reward
- Swim to the nearby Sea of Drowned Love dungeon, marked by an orange portal on your map
- Unseal the Sealed Tsunami Stone by right-clicking on it in your inventory
- Interact with the orange dungeon portal to enter the dungeon (You must be in a party and have an open Tsunami Stone)