The Winter Night Market stands as one of the most atmospheric and rewarding events in the annual calendar. Unlike the more structured town festivals, this three-day pier-side gathering focuses on commerce, deep-sea exploration, and hidden secrets. Among the floating shops and the mysterious submarine, the Mermaid Boat on the far east side of the docks hides a valuable treasure that many casual visitors overlook. This hidden reward requires a specific sequence—the famous 15423 code—to unlock a rare Pearl.

The Night Market Schedule and Logistics

Attending the Night Market requires planning, as it only occurs from the 15th to the 17th of Winter. The festival transforms the standard Beach map into a bustling hub of glowing lanterns and nautical merchants. While the general festivities begin at 5:00 PM and run until 2:00 AM, specific attractions operate on slightly different timers.

The Mermaid Boat is accessible from 5:00 PM until 12:30 AM each night. It is situated at the end of the long pier extending to the right. To make the most of the evening, it is often efficient to handle farm chores during the day and arrive at the beach precisely at 5:00 PM. This timing is crucial because the mermaid's performance takes a significant chunk of in-game time, and you want to ensure you have enough hours remaining to visit the Traveling Cart or take a trip in the Submarine.

Entering the Mermaid Boat

Walking into the Mermaid Boat reveals a darkened, aquatic-themed theater. There is no entrance fee, and the show begins automatically once you are inside. A mermaid appears on stage, accompanied by various aquatic effects and a musical performance. For those focused purely on efficiency, it is important to note that the show lasts approximately 1 hour and 40 minutes of in-game time.

You cannot interact with the puzzle elements—the five large clam shells—until the curtain call. Many players make the mistake of clicking the shells as soon as they enter, which results in nothing but random musical notes. The game requires you to witness the entire performance before the interactive sequence becomes active.

Executing the Mermaid Show 15423 Sequence

The secret to obtaining the Pearl lies in the five clam shells lined up across the stage. After the mermaid finishes her song and disappears, these shells become interactive. Each shell corresponds to a specific musical note. To trigger the hidden reward, you must click them in the exact order specified in Secret Note #15.

The code is 1-5-4-2-3, reading from left to right.

  1. First Note: Click the shell on the far left.
  2. Second Note: Click the shell on the far right (the 5th one).
  3. Third Note: Click the shell second from the right (the 4th one).
  4. Fourth Note: Click the shell second from the left (the 2nd one).
  5. Fifth Note: Click the middle shell (the 3rd one).

When performed correctly after the show concludes, the mermaid will reappear briefly to grant you a Pearl. It is a one-time-per-save reward for each player. In multiplayer sessions, every individual player can watch the show and input the code to receive their own Pearl, making it a highly profitable group outing.

Why the Pearl is Essential in 2026

As the game has evolved, the utility of the Pearl has expanded beyond being a simple vendor item. While selling a Pearl for 2,500g is a quick way to boost your winter coffers, there are several strategic reasons to keep this rare item in your chest.

The Birch Double Bed

For interior design enthusiasts, the Pearl is the primary currency for one of the most aesthetically pleasing furniture items in the game. The Desert Trader, who appears at the Night Market near the coffee stand, offers a Birch Double Bed in exchange for a single Pearl. This bed is difficult to acquire through other means and fits perfectly with light-wood or forest-themed farmhouse interiors.

High-End Tailoring

If you take a Pearl to Emily’s sewing machine (or use your own at home), combining it with a piece of Cloth will produce the Wedding Veil. This is a crucial item for players looking to complete their clothing collection or for those planning a themed wedding ceremony in-game. Additionally, using a Pearl as a dye source in the dye pots results in a white color.

Universal Gifting

The Pearl is classified as a "Universal Love." This means every single villager in the game (with the exception of perhaps specific monstrous entities if applicable in newer updates) will react with maximum joy when receiving it. If you are struggling to build friendship with a difficult character like Pierre or George, a Pearl is a guaranteed way to earn a massive boost in heart points.

The Logic Behind Secret Note #15

New players often wonder how the community discovered the 15423 code. The answer lies in the Secret Note system. Secret Note #15 is a pictorial note that shows a series of numbers corresponding to the shells in the mermaid boat.

You do not actually need to find or read Secret Note #15 for the code to work. As long as you know the sequence, you can claim your Pearl on the very first year of your farm. However, finding the note provides the "lore" justification and helps confirm that the shell order is 1 (left) to 5 (right).

Troubleshooting: Why the Code Isn't Working

If you have followed the 15423 order but the Pearl hasn't appeared, check the following conditions:

  • The Show Must End: The most common error is inputting the code during the song. You must wait until the mermaid stops singing and the stage goes quiet.
  • One Pearl Limit: This reward is strictly limited to one per player per save file. If you have already collected it in a previous year, you can still play the shells to make music, but the mermaid will not provide another Pearl.
  • Input Speed: While the game isn't overly sensitive to speed, clicking the shells too rapidly can sometimes cause the game to miss an input. Click steadily and ensure each shell emits its specific sound before moving to the next.
  • Click Accuracy: Ensure your cursor is directly over the shell. In the dark environment of the boat, it's easy to accidentally click the floor or the stage background.

Other Ways to Find Pearls

If you have already exhausted the Mermaid Show 15423 reward and need more Pearls for crafting or trading, you have several alternative, albeit rarer, options.

  1. Blobfish Fish Ponds: Once a Blobfish pond reaches a population of at least 9, there is a small daily chance (approximately 1.7% to 1.9%) that the fish will produce a Pearl in the harvest bucket.
  2. Artifact Troves: Opening Artifact Troves at the Blacksmith has a roughly 3.7% chance of yielding a Pearl.
  3. Deep Sea Fishing: While incredibly rare, catching a Pearl while using the Submarine at the Night Market is possible, though the percentage is lower than catching specific deep-sea fish like the Midnight Squid or Spook Fish.
  4. Willy’s Reward: Filling a fish pond with 10 Crabs and talking to Willy will result in a special dialogue and a one-time Pearl reward.
  5. Ginger Island: For those who have unlocked the late-game volcanic region, there are specific hidden puzzles on the island that grant a Pearl upon completion.

Maximizing Your Night Market Experience

Since the Mermaid Show 15423 secret is a quick task, you should use the remaining time at the Night Market effectively.

The Free Coffee: Every night, visit the Desert Trader to the left of the docks. He gives out one free cup of Coffee every night. This speed boost is invaluable for navigating the crowded docks.

The Traveling Cart: The merchant sets up her cart on the docks with a rotating stock each night. This is a prime opportunity to find rare seeds or items needed for the Community Center bundles that you might have missed during the earlier seasons.

Lupini’s Paintings: Famous Painter Lupini sells a different unique painting every night over a three-year rotation. If you are a collector, this is the only time and place to buy these specific works of art.

The Submarine: For 1,000g, you can take the submarine down to catch unique fish. This is a time-consuming activity, so it is recommended to do the Mermaid Show on night one and dedicate night two or three entirely to deep-sea fishing.

The Visuals of the Mermaid Boat

The attention to detail in the Mermaid Boat is a testament to the game's enduring charm. The way the shells glow and the specific tonal shift of each note provides a satisfying sensory experience. In the 2026 gaming landscape, where many titles focus on high-fidelity graphics, the simple, rhythmic puzzle of the mermaid show remains a fan favorite because of its cozy aesthetic and the "eureka" moment of solving a hidden mystery.

When you leave the boat with your Pearl, you have participated in one of the game's longest-standing traditions. Whether you use that Pearl to decorate your home with a snazzy bed or gift it to a neighbor to seal a friendship, the 15423 sequence is a rite of passage for every successful farmer in the valley. Ensure you mark your calendar for Winter 15 and head to the beach as the sun sets—the mermaid is waiting.