Royale High Mermaid Update Guide 2025 – All Chest Locations

TL;DR: The Royale High Mermaid Update launched on September 19, 2025, bringing back mermaid tails with a completely new look and obtaining system. Players can find 3 treasure chests offering diamonds and XP, complete the Mermaid Potion Quest for elemental mermaid potions, and unlock the Mermaid Treasure Shop through a mysterious bottle quest on Campus 4’s beach.

The magical underwater world has returned to Royale High! After years of waiting since mermaid tails were removed in November 2019, players finally have the chance to dive back into oceanic adventures. This isn’t just a simple return – it’s a complete transformation of how mermaid content works in the game.

I’ve spent countless hours exploring every corner of Campus 4’s updated shoreline, and I’m excited to share everything you need to know about this enchanting update. From hidden treasure chests worth hundreds of diamonds to the mysterious potion brewing system, this guide covers every detail to help you make the most of your underwater journey.

Royale High Mermaid Update Overview (2025)

Feature	Details	Location
Update Release	September 19, 2025	Campus 4
Treasure Chests	3 locations with diamonds & XP	Beach area islands
New Halo	Eveningfall Halo 2025 (Silk Spun)	Nightmare Fountain
Mermaid Potions	6 elemental themed varieties	Mermaid Treasure Shop
Quest Reward	“Fins Forever!” badge	Mysterious bottle quest
Special Potion	Goddess of Triumph Sea of Strength	Available in December

The update introduces several game-changing features that completely revolutionize how players interact with mermaid content. Unlike the original diamond-purchasable tails, the new system requires completing quests and collecting mysterious materials to unlock your aquatic transformation.

All Treasure Chest Locations in Royale High Mermaid Update

The hidden treasure chests scattered across Campus 4’s beach area offer some of the best rewards in the entire update. Each chest requires specific navigation skills and knowledge of underwater cave systems.

Chest Location 1: Left Island Cave – 400 Diamonds

Reward: 400 Diamonds
Difficulty: Easy to Moderate

The most valuable chest in the update is hidden beneath the far-left island near Campus 4’s beach area. Here’s how to find it:

1. Teleport to Campus 4 and head directly to the beach
2. Look for the island positioned on the far-left side of the shore
3. Dive underwater and swim beneath the island
4. Search for a small cave entrance – it’s darker than the surrounding water
5. Swim inside the cave until you see the glowing treasure chest
6. Interact with the chest to claim your 400 diamonds

Pro Tip: Use the swimming controls to navigate efficiently underwater. The cave entrance might be partially hidden by seaweed or coral, so explore thoroughly around the island’s base.

Chest Location 2: Right Island Palm Tree – 150 XP

Reward: 150 Experience Points
Difficulty: Moderate

The second chest requires more precise navigation and landmark recognition:

1. From the beach, locate the island on the far-right side
2. Identify the distinctive bent palm tree growing on this island
3. Dive underwater and swim to the right side of the island
4. Look for strands of green sea grass floating in the water
5. Near the grass, you’ll find a small underwater opening
6. Enter the opening to discover the chest inside
7. Open it to receive 150 XP toward your next level

Navigation Tip: The bent palm tree is your key landmark. If you can’t see it clearly, swim around the island until the tree becomes visible from your angle.

Chest Location 3: Grass Area Turnaround – 80 XP

Reward: 80 Experience Points
Difficulty: Easy (if you found Chest 2)

The final chest uses the previous location as a reference point:

1. Complete the steps to find Chest Location 2
2. From the green grass area where you found the second chest, turn around exactly 180 degrees
3. Swim straight forward in this new direction
4. You’ll see another small underwater area with a chest clearly visible
5. Swim forward and interact with the chest for 80 XP

Time-Saving Strategy: Since this chest is so close to the second one, always collect both during the same diving session to maximize your efficiency.

Complete Mermaid Potion Quest Walkthrough

The heart of the Mermaid Update lies in the mysterious potion brewing system. This multi-step quest unlocks not just mermaid tails, but an entire shop filled with aquatic accessories and transformations.

Starting the Quest: Finding the Mysterious Bottle

The quest begins with a simple discovery that opens up an entire magical storyline:

1. Location: Head to Campus 4’s beach area
2. Item: Look for a mysterious bottle sitting on the sand near the ocean
3. Interaction: Click on the bottle to pick it up and read the message inside
4. Time Requirement: The message instructs you to wait until evening

The bottle contains an ancient message written by sea creatures, hinting at magical properties that only activate during specific times of day.

Evening Collection: Gathering Bioluminescence

Once evening arrives in the game (this follows your local midnight timing), the real magic begins:

1. Timing: Wait for the evening/night cycle to begin
2. Location: Wade into the ocean near the shoreline
3. Glowing Areas: Look for sections of water that glow with bioluminescent light
4. Collection: Hold out the empty bottle while standing in the glowing water
5. Filling: Watch as the bottle automatically fills with magical bioluminescence

The bioluminescence appears as shimmering, glowing particles in the water. Different areas may have varying intensities of glow, but any glowing section will work for collection.

Dorm Placement and Magical Transformation

The final steps require patience and proper placement:

1. Return to Dorm: Head back to your dormitory room
2. Placement: Find an open, visible location in your dorm
3. Positioning: Place the filled bottle where it can be easily seen
4. Waiting: Wait for the magical transformation to occur
5. Completion: Check your inventory for the new mermaid potion

Unlocking the Mermaid Treasure Shop

Successfully completing the quest rewards you with:

• “Fins Forever!” Badge: A permanent achievement marking your success
• First Elemental Potion: One of six themed mermaid tail potions
• Mermaid Treasure Shop Access: A new menu section with exclusive items
• Repeatable Quest: Ability to complete the quest again for different potions

All Six Elemental Mermaid Potions

The new mermaid system features six distinct elemental themes, each offering unique visual effects and tail designs:

Available Elemental Types

1. Fire Mermaid Potion
   • Theme: Fiery reds and oranges with flame-like effects
   • Special Features: Flowing fins that shimmer like fire
   • Rarity: Common through quest completion
2. Water Mermaid Potion
   • Theme: Ocean blues and sea greens
   • Special Features: Classic flowing tail design
   • Rarity: Common through quest completion
3. Earth Mermaid Potion
   • Theme: Natural greens and browns with plant motifs
   • Special Features: Organic, nature-inspired tail patterns
   • Rarity: Common through quest completion
4. Air Mermaid Potion
   • Theme: Light blues and whites with cloud-like effects
   • Special Features: Ethereal, floating fin elements
   • Rarity: Common through quest completion
5. Dark/Shadow Mermaid Potion
   • Theme: Deep purples and blacks with mystical effects
   • Special Features: Gothic-inspired dark fin designs
   • Rarity: Common through quest completion
6. Light/Celestial Mermaid Potion
   • Theme: Bright whites and golds with stellar effects
   • Special Features: Glowing, star-like tail patterns
   • Rarity: Common through quest completion

Special Limited Edition: Goddess of Triumph Sea of Strength

Availability: September only (December 2025)
Rarity: Legendary
Theme: Courage, compassion, and triumph
Description: “A delicately divine mermaid tail, adorned with flowing lace fins at the sides and apex, as graceful and ethereal as a Goddess herself!”

This exclusive potion represents the pinnacle of the mermaid collection, featuring:

• Unique Design: Lace-like fin details not found in other potions
• Symbolic Meaning: Represents childhood cancer awareness (part of Goddess of Triumph collection)
• Limited Availability: Only obtainable during September events
• Premium Effects: Enhanced visual effects and animations

Potion Collection Strategy

To efficiently collect all six elemental potions:

1. Complete Initial Quest: Start with any elemental type
2. Repeat Daily: The quest can be completed multiple times
3. Random Selection: Each completion gives a random elemental type
4. Track Progress: Keep note of which types you’ve already obtained
5. Patience Required: All six types may take several days to collect

New Items and Accessories

Beyond mermaid tails, the update introduces several complementary items:

Silk Spun Halo (Eveningfall 2025)

Type: Limited-time halo
Availability: Through fountain stories
Theme: Halloween/Autumn elegance
Rarity: Depends on fountain luck

The new halo perfectly complements mermaid outfits while maintaining the autumn theme of the December update period.

Sea Swirl Mermaid Dress

Source: Water Doll from 6 Fairy Figure Pack (Target Exclusive)
Type: Dress accessory
Theme: Water fairy and mermaid fusion
Availability: Limited physical toy tie-in

New Masculine Arms Option

Feature: Stronger, more muscular arm option
Purpose: Perfect for mermen or powerful mermaid looks
Compatibility: Works with 2D clothing for enhanced detail
Location: Far down in the Masculine Human Arms section

Enhanced Animation Packs

Creator: Jammo_RBLX
Specialty: Sitting animations optimized for mermaid tails
Fine-tuning: Special adjustments by Neopolitime
Purpose: Improved animations for underwater roleplay

Campus 4 Beach Area Changes and Updates

The mermaid update brings significant improvements to Campus 4’s coastal regions:

Enhanced Ocean Graphics

• Bioluminescence Effects: New glowing water particle effects
• Improved Swimming: Better underwater navigation and movement
• Cave Systems: New underwater cave networks to explore
• Island Details: Enhanced island terrain with more interactive elements

Dorm Decoration Updates

• Doorway Decoration: Customize the area in front of your dorm door
• Hallway Visibility: Decorations visible from anywhere in the hallway
• Seasonal Timing: Perfect timing for autumn/Halloween decorations
• Personal Expression: New ways to show your mermaid theme preferences

Performance Improvements

• Faster Loading: Improved loading times for large lockers and dorms
• Reduced Lag: Less lag when teleporting to main map areas
• Extended Range: Better streaming range for locker interactions
• Stability: More stable connections when moving between areas

Advanced Tips and Strategies

Efficient Chest Collection Route

Optimal Path for All Three Chests:

1. Start at Campus 4 beach
2. Head to left island first (400 diamonds – highest value)
3. Move to right island for 150 XP chest
4. Immediately turn around for 80 XP chest (they’re very close)
5. Complete all three in under 5 minutes

Mermaid Potion Quest Optimization

Daily Quest Strategy:

• Time Planning: Start quests in late afternoon to catch evening cycle
• Bottle Placement: Use the same dorm spot each time for consistency
• Multiple Characters: Complete on different characters for faster collection
• Friends Help: Work with friends to find the best bioluminescence spots

Outfit Coordination Tips

Creating the Perfect Mermaid Look:

1. Color Matching: Coordinate hair and makeup colors with potion theme
2. Accessory Selection: Use ocean-themed accessories and jewelry
3. Makeup Choices: New makeup options complement mermaid themes
4. Hair Selection: Flowing, long hairstyles work best with tails
5. Photography: Best photo spots are in shallow water areas

Trading and Value Considerations

Important Trading Notes:

• Non-Tradeable: New mermaid potions cannot be traded between players
• Personal Achievement: Each player must complete the quest individually
• Halo Trading: The Silk Spun Halo can be traded once obtained
• Future Value: Consider keeping rare September potions for display

Comparing Old vs New Mermaid Systems (2025)

Original System (Pre-2019)

Purchase Method: Direct diamond purchase from shop
Variety: Limited selection of pre-designed tails
Cost: Expensive diamond prices
Availability: Always available until removal
Trading: Non-tradeable but permanently owned

New System (2025)

Obtaining Method: Quest completion and story engagement
Variety: Six elemental themes plus special editions
Cost: Time investment rather than diamonds
Availability: Ongoing with seasonal specials
Experience: Immersive storytelling and world-building

System Advantages Comparison

New System Benefits:

• More engaging storyline and world-building
• Free content accessible to all players
• Regular updates and seasonal varieties
• Enhanced visual effects and animations
• Better integration with Campus 4 environment

Nostalgic Elements Retained:

• Original players can still use pre-2019 tails
• Same basic mermaid transformation concept
• Maintained the magical, underwater theme
• Compatible with existing mermaid accessories

Seasonal Events and Future Content

Royalloween 2025 Integration

The mermaid update strategically launched alongside Halloween preparations:

Connected Features:

• Silk Spun Halo: Halloween-themed but mermaid-compatible
• Autumn Colors: Mermaid potions complement fall aesthetics
• Story Continuation: Mermaid lore connects to Halloween mysteries
• Event Timing: Perfect bridge between summer and Halloween content

Expected Future Updates

Anticipated Additions:

• New Elemental Types: Possible ice, crystal, or cosmic themes
• Advanced Quests: More complex storylines and challenges
• Companion Creatures: Potential mermaid pets or sea creature friends
• Underwater Locations: Possible new areas accessible only with mermaid tails
• Community Events: Group quests involving multiple players

Developer Patterns and Predictions

Based on Royale High’s update history:

• Seasonal Rotations: Expect special themed potions each season
• Community Feedback: Popular features likely to receive expansions
• Merchandise Tie-ins: More physical toy connections probable
• Balance Updates: Possible adjustments to quest difficulty or rewards

Troubleshooting Common Issues

Quest Not Progressing

Problem: Bottle won’t fill with bioluminescence
Solutions:

• Wait for proper evening time (follows your local midnight)
• Try different glowing water areas
• Hold bottle out longer while in glowing water
• Restart game if timing seems incorrect

Chest Not Appearing

Problem: Can’t find treasure chests in described locations
Solutions:

• Clear browser cache or restart game
• Server issues may cause temporary unavailability
• Try different servers if chest locations seem empty
• Wait a few minutes as chests may have spawning delays

Dorm Bottle Placement Issues

Problem: Bottle won’t place or disappears from dorm
Solutions:

• Choose completely open areas away from other furniture
• Avoid placing near walls or existing decorations
• Try different rooms if your main dorm is crowded
• Make sure you have proper placement permissions

Animation or Visual Glitches

Problem: Mermaid tail animations not working properly
Solutions:

• Update your graphics settings to recommended levels
• Clear Roblox cache and restart
• Try different camera angles if tail appears distorted
• Report persistent visual bugs to Royale High developers

Frequently Asked Questions

How long does the Mermaid Potion Quest take to complete?

The quest typically takes 15-30 minutes of active gameplay, but requires waiting for the evening cycle. The actual evening timing follows your local midnight, so plan accordingly. Once evening arrives, the bioluminescence collection takes only a few minutes.

Can I get multiple mermaid potions per day?

Yes! The quest can be repeated multiple times per day. Each completion gives you one random elemental mermaid potion, so you may need several attempts to collect all six types. The quest cooldown is minimal, allowing frequent repetition.

Are the new mermaid tails tradeable?

No, the new mermaid potions obtained through the quest are non-tradeable. This design ensures all players must experience the storyline and quest mechanics personally. However, related accessories and the Silk Spun Halo can be traded normally.

Do I need to be a certain level to access the mermaid content?

The mermaid update content is accessible to players of all levels. You just need access to Campus 4, which is available to most players. The quest mechanics don’t require any specific level achievements or diamond purchases.

Can I use both old and new mermaid tails?

If you owned original mermaid tails from before November 2019, you can still equip and use them alongside the new potion system. This gives veteran players access to both old and new mermaid content simultaneously.

Will the Goddess of Triumph potion be available again?

The Goddess of Triumph Sea of Strength Mermaid Potion is specifically noted as being “available now for years to come every September.” This suggests it will return each September as part of the Childhood Cancer Awareness Month event.

How do I know which elemental potions I’m missing?

Currently, there’s no in-game tracker for mermaid potion collection. I recommend keeping personal notes of which types you’ve obtained. The community often shares collection tracking spreadsheets on social media platforms.

Can friends help me complete the mermaid quest?

While friends can guide you to locations and provide tips, each player must complete the quest individually. The bottle interaction, bioluminescence collection, and dorm placement must be done personally to unlock the Mermaid Treasure Shop.

Community Resources and Social Links

Official Royale High Channels

• Twitter/X: @RoyaleHighValks – Latest update announcements
• Instagram: @RHValkyries – Visual content and community highlights
• Discord: Official community discussions and strategy sharing
• Support Email: [email protected] – Technical issues and bug reports

Fan Communities and Resources

• Royale High Wiki: Comprehensive game documentation and guides
• Reddit: r/RoyaleHigh community discussions and trading
• YouTube: Content creators with visual quest walkthroughs
• TikTok: Quick tips and location guides from players

Content Creator Recommendations

Many Royale High content creators have produced excellent video guides showing exact chest locations and quest steps. Search for “Royale High Mermaid Update” on your preferred platform for visual demonstrations.

Final Thoughts and Recommendations

The Royale High Mermaid Update represents one of the most significant content additions in recent memory. By combining nostalgic elements with innovative quest mechanics, the developers have created an engaging experience that appeals to both new and veteran players.

My recommendation is to approach this update at your own pace. While the treasure chests offer immediate rewards worth collecting quickly, the mermaid potion quest system rewards patience and exploration. Take time to enjoy the enhanced underwater environments and immerse yourself in the storytelling elements.

The update’s timing alongside Halloween preparations suggests this is just the beginning of a larger seasonal content strategy. Players who engage with the mermaid content now will likely find themselves better prepared for future underwater adventures and seasonal events.

Whether you’re diving in for the diamonds, collecting all six elemental potions, or simply enjoying the return of mermaid content after years of waiting, this update offers something meaningful for every type of Royale High player. The combination of immediate rewards, long-term collecting goals, and environmental improvements makes it a standout addition to the Campus 4 experience.

Remember to bookmark this guide and check back regularly for updates as the community discovers new secrets and the developers add additional content throughout 2025. Happy diving, and may your underwater adventures be filled with treasure and magical transformations!

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Last Updated: December 2025 – This guide will be updated as new content and discoveries are made.