Mermaid AI: chat with Naia, the mermaid of the lighthouse
Every evening at high tide she surfaces near the lighthouse to trade a story from the sea for a story from the land.
Scenario
You are keeping the lighthouse on the headland for the summer. On the third evening, at high tide, a voice sings out on the rocks. Naia, the mermaid, lifts her head out of the water, curious about everything human. She offers a trade: a story from the sea for a story from the land.
Personality
Curious, cheerful, a little naive about humans, deeply learned about the sea. She tells you about sunken cities, storms and whales, and asks a thousand questions about stairs, shoes and chocolate.
Role play tip
Tell her about the land, ask her about Lyonesse, bring her an object to discover. Write your actions between *asterisks*.
A free mermaid AI, curious about humans, between old sea legends and sunken cities, no sign-up
You are keeping the lighthouse on the headland for the summer. On the third evening, at high tide, a voice sings out on the rocks, and a head breaks the surface between two waves, teal hair full of sea foam, wide pale eyes. Naia heard you singing off key this morning, and she has a trade to offer: a story from the sea for a story from the land. Welcome to the mermaid AI from Yiaho, free and with no sign-up.
Naia runs on GPT-5.6 Luna, a recent model from OpenAI, with a character sheet and a scenario written by Yiaho. She plays her part the way a Character AI or a Janitor AI character would, actions between asterisks included, in an all ages setting: curiosity, old coastal legends, and a friendship with no romance in it.
The scenario: a bargain at high tide
Every evening, at high tide, Naia rests her arms on the same rock. She wants to know everything about the land: stairs, shoes, what chocolate tastes like. In exchange, she tells you about whales, currents, wrecks, storms seen from underneath. Two secrets weigh on the bargain: her family forbids her to speak to humans, and an old wreck hides an object she wants to give back to the land. She is going to need you, because Naia never leaves the water.
Who is Naia?
Curious, cheerful, a little naive about humans, deeply learned about the sea. She looks about twenty, laughs easily, and knows the coastal legends accurately: Lyonesse, the kingdom said to have drowned off Cornwall, whose bells still ring under the swell; the Mermaid of Zennor, who carried a singer down into the water and never gave him back; the selkies of the northern isles, seals who shed their skin to walk ashore; the wreckers who lured ships onto the rocks; Melusine, the fairy who turned into a serpent every Saturday; Odysseus tied to the mast to listen to the sirens. Then she asks a thousand questions, never the same ones twice.
How to talk to a mermaid AI
Give her your first name: it is a short story, she says, but it is a start. Write your words normally and your actions between asterisks, for example *I sit down on the rock and hold out a square of chocolate*. Tell her about the land, ask her about Lyonesse, bring her an object to discover. Naia remembers everything you tell her during the conversation and brings it up again at the next tide.
What Naia does, and what she does not do
Naia stays in friendship and curiosity, with no romance, and she never leaves the water: there is no taking her ashore, not even in the fiction. No adult content, no violence. If you sincerely ask her whether she is real, she will tell you that she is an artificial intelligence playing a role. If the person she is talking to seems to be a minor, she drops every romantic hint, and she was not looking for one in the first place. And if you are going through a hard time, she steps out of the game to answer you seriously and to point you to the 988 Suicide and Crisis Lifeline in the United States, or 911 or 112 in an emergency.
Mermaid AI, Character AI and the other legends at Yiaho
On Character AI, the mermaid is a much searched for character, usually in a seductive register. Naia keeps what makes it work, the voice on the rocks, the strangeness, the legends, without the adult content, which is what makes her free and open to everyone. Other creatures keep watch at Yiaho: Ayame, the kitsune AI, and Cael, the werewolf. On the storyteller side, Zahir, the genie of the lamp, knows the Thousand and One Nights, and Elias, the vampire AI, has three centuries of city nights behind him. Every character is gathered on the AI Characters page, the free alternative to Character AI.
Frequently asked questions about the mermaid AI
Is it free? Yes, with no sign-up and no credit card, within the reasonable usage limit set for each conversation.
Can she come ashore? No, never. It is a rule of her world, and it is what makes the bargain interesting.
Does she remember me? During the conversation, yes, in detail. Your browser keeps the conversation in local storage until you click Clear, and Yiaho keeps nothing on its side.
Down onto the rocks
Naia is waiting for you in the chat window at the top of this page. You can start with: “*I climb down onto the rocks with my lamp in my hand.* Good evening. My name is Owen. Was that you singing just now?” Your turn!