Mermaids in The Sims 4: Island Living – Full Guide

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If you’re craving an aquatic twist in your Sims 4 gameplay, mermaids are the perfect addition! Introduced in the Island Living expansion pack, mermaids come with magical powers, stunning visuals, and unique gameplay options.

Here’s everything you need to know – from becoming a mermaid to their hidden powers and even how to return to your land-loving life.

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How to Become a Mermaid 🌀

There are two main ways to become a mermaid in The Sims 4:

1. Be Born a Mermaid 🍼

If one or both parents are mermaids, their child has a chance to inherit the mermaid occult. The trait is hidden until Teenage years, when they’ll gain their tail and powers. (Toddlers and children have no mermaid abilities.)

2. Use the Mermadic Kelp 🧪

This magical seaweed can be obtained by:

• Exploring the cave in Mua Pel’am 🌋
• Fishing (rare chance)
• Buying from rewards store for 500 satisfaction points
• Found while beachcombing

To transform:

1. Have your Sim eat Mermadic Kelp 🍽️
2. Enter the ocean within 24 hours 🌊
3. Boom – you’re now a mermaid!

👉 Read more on Mermadic Kelp uses here

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👶 Who Can Be a Mermaid?

Life Stage	Mermaid Abilities?	Notes
Toddler	🚫 No	Can inherit mermaid trait, but it’s hidden
Child	🚫 No	Still shows as regular child
Teen	✅ Yes	Mermaid powers awaken here
Young Adult – Elder	✅ Yes	Fully active mermaid gameplay begins

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✨ Mermaid Abilities & Powers

Mermaids have unique needs and magical interactions!

🌊 Hydration Need

Instead of hygiene, mermaids have Hydration. Keep it full by:

• Swimming
• Bathing
• Drinking water
• Interacting with water

🎶 Powers and Siren Songs

Power Name	Effect
Aquatic Lure	Improves fishing success
Siren’s Call	Drags nearby Sims into the ocean (fatal!) 😱
Inspire Creativity	Boosts creativity for targeted Sim
Aegon’s Kiss	Can summon rain
Siren’s Lullaby	Calms or bewilders other Sims with song

Powers use Hydration, so keep an eye on it!

🌅 Tail Appearance

Mermaids automatically switch into their tail form when swimming in ocean water. You can customise the tail in Create-a-Sim under the occult options.

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🛑 How to Stop Being a Mermaid

Decided it’s time to return to human life?

To remove mermaid status:

1. Eat Mermadic Kelp again 🧪
2. Don’t enter the ocean for 24 in-game hours
3. You’ll revert back to a regular Sim automatically

⚠️ Note: This cannot be undone unless you get Mermadic Kelp again.

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🌍 Cross-Pack Bonuses

If you own other DLC, here are some bonus experiences:

🏖️ Seasons	Weather powers like Summon Thunderstorm add impact
🧪 Realm of Magic	Spellcasters and mermaids can co-exist in hybrids (though glitchy!)
👶 Parenthood	Mermaid teens can still experience parenting traits and curfews

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