Skip to content
Moonlit Almanac
GuideGiftsRomanceSwitchDatabase
Moonlit Almanac

An independent guide. Not affiliated with Little Chicken Game Company, XSEED Games, Marvelous Europe, or Nintendo.

Explore

GuideGiftsRomanceSwitch

Database

CharactersCropsFishSpellsMachinesAchievementsLocationsQuests

Site

AboutEditorial policyContactPrivacyTermsDisclaimerOfficial Moonlight Peaks Discord

Copyright 2026 Moonlit Almanac. Game names and trademarks belong to their respective owners.

  1. Home
  2. Mermaids & Fins

Exploration & Romance Guide

Moonlight Peaks Mermaids & Fins Guide

Plunge into the hidden aquatic depths of Mermaid Cove. Track your crafting materials for the Enchanted Diving Fins, navigate dangerous deep-water current zones, collect rare coral and pearls, and charm Lorelei the siren.

Updated September 25, 2026 • 8 min read
Official Moonlight Peaks fishing pier leading out to the ocean and mysterious mermaid reefs
Earning your water fins unlocks submerged diving, glowing coral harvesting, and romance with Lorelei the mermaid.Source: Steam store
On this pageFins Quest ChecklistMermaid Cove ZonesLorelei Romance GuideDiving Mechanics & Survival
Water Transmutation

How to Get Fins: Materials & Enchantment Checklist

Vampires take water damage in deep ocean currents. Complete this ritual quest from Fisherman Finn and Lorelei to enchant your lower body into aquatic fins with infinite underwater oxygen:

Quest: The Call of the Deep: Earning Your Fins

Giver: Fisherman Finn & Lorelei • Prerequisites: Reach Fishing Level 3 & Explore the southern coastal pier after 9:00 PM

0 of 4 Gathered

Vampires naturally take water damage in deep ocean currents. Obtaining the enchanted Water Fins transforms your lower body into sleek aquatic fins upon entering salt water, granting infinite oxygen and access to the sunken Mermaid Cove.

Luminescent Coralx5 Required
📍 Tidal Reefs south of the fishing pier
Gathered by hand along low-tide rocky shallows between 8:00 PM and midnight.
Abyssal Pearlx2 Required
📍 Giant Freshwater Clams
Harvested from glowing oyster beds or found while diving with shallow snorkel.
Siren Tearx1 Required
📍 Siren's Rock during high tide
Gifted by Lorelei when offering her fresh Moon Dew or caught during a full moon.
Silver Ingotx3 Required
📍 Cave of Echoes (Floors 15-25)
Smelt 5 Silver Ore per ingot in your farm furnace.
Unlocked Aquatic Perks:
  • ✨ Permanent water fin shapeshifting upon entering ocean waterways
  • ✨ Infinite underwater breathing (no oxygen timer in Mermaid Cove)
  • ✨ +50% swim sprint speed and underwater dash
  • ✨ Unlocks submerged forage nodes and sunken pirate treasure chests
Submerged Navigation

Mermaid Cove: Underwater Zones & Coordinates

Dive into the deep blue reef. Explore all 4 submerged sectors to loot pirate galleons, harvest luminescent corals, and visit Lorelei:

Shallow WaterSubmerged Biome

Luminescent Coral Gardens

Reef CoordinatesX: 14 • Y: 92

Bioluminescent coral beds that cast a warm turquoise glow underwater. Perfect for beginners to gather crafting ingredients.

💎 Prime Underwater Foragables & Relics:
• Luminescent Coral• Starfish Relics• Sea Anemone
Romance Dossier

Lorelei Romance: Schedule, Loved Gifts & Heart Events

Lorelei is the mysterious siren of the south reef. Court her by visiting Siren's Rock during high tide and gifting luminescent ocean treasures:

Dateable Mermaid

Lorelei

The Siren of the South Reef

📍 Residence: Lorelei's Shell Grotto & Siren's Rock
🌊 Schedule: Surfaces onto Siren's Rock between 9:00 PM and 1:00 AM on clear nights; retreats into the submerged Shell Grotto during daytime and heavy storms.
💖 Loved Gifts (+80 Pts):
  • Luminescent Coral
  • Siren's Midnight Brew
  • Sea Glass Necklace
  • Gold Star Oyster
  • Aquamarine
👍 Liked Gifts (+45 Pts):
  • All Seashells
  • River Pearls
  • Water Lilies
  • Moon Berries
  • Silver Ore
❌ Disliked Gifts (-20 Pts):
  • Fire Orbs
  • Lava Peppers
  • Bat Guano
  • Cursed Clay
Heart Milestones:
2 Hearts

The Voice on the Waves

⏱️ 9:00 PM - 12:00 AM (Clear Night)

📍 Location: Fishing Pier Edge

🔍 Trigger Conditions: Approach the end of the pier while holding any seashell.

Optimal Dialogue Choice:
Listen quietly and applaud her haunting midnight melody (+50 Friendship).
🎁 Reward: Recipe: Sea Glass Trinket
4 Hearts

The Lost Hairpin

⏱️ 10:00 PM - 2:00 AM

📍 Location: Tidal Reefs Shallows

🔍 Trigger Conditions: Inspect the glittering rock crevices during low tide.

Optimal Dialogue Choice:
Wade into the water without hesitation to retrieve her heirloom comb (+50 Friendship).
🎁 Reward: Iridescent Conch Shell (Loved Gift)
6 Hearts

Underwater Duet

⏱️ 11:00 PM - 3:00 AM

📍 Location: Lorelei's Shell Grotto (Requires Fins)

🔍 Trigger Conditions: Dive into Mermaid Cove and swim to the center altar.

Optimal Dialogue Choice:
Admit that the human and vampire worlds feel lonely without her ocean song (+100 Friendship).
🎁 Reward: Siren's Blessing (+15% fishing reel speed permanently)
8 Hearts

Moonlit Confession

⏱️ Midnight (12:00 AM - 2:00 AM, Full Moon)

📍 Location: Summit of Siren's Rock

🔍 Trigger Conditions: Offer the Moonlit Pearl Pendant under the full moon sky.

Optimal Dialogue Choice:
'I want to share both the night sky and the deep ocean with you.' (+250 Romance).
🎁 Reward: Official Confession Cutscene & Tidal Promise Ring
Vampire Water Rules

Underwater Sunlight & Diving Mechanics

1. Deep Ocean Blocks Sunlight

While shallow tidal reefs still expose you to lethal sunrise damage after 6:00 AM, diving into Mid-Depth and Abyssal Trenches completely blocks solar rays, letting you safely explore underwater during daylight hours.

2. Fins vs. Bat Form Mobility

Use Bat Form for fast overland flight across rocky cliffs, but switch immediately to Water Fins upon reaching rivers and oceans. Attempting to fly over deep ocean channels will exhaust bat stamina and drop you into the water.

3. Mermaid Offerings for Water Nymph Altar

Luminescent Corals and Void Carp harvested in Mermaid Cove satisfy key seasonal donations for the Water Nymph Altar, expanding your farm sprinklers to a massive 5x5 coverage radius.

Want to learn more about the ancient water deity?

Visit our complete Deity Shrines & Offerings guide for coordinates to the Weeping Basin Sanctuary.

View Deity Shrines Guide