Sirens are found in warmer seas, jumping out of the water or following boats. You can befriend a wild mermaid by giving them a sea pickle, they will jump and leave behind few tokens. The siren charm can be used to summon a Siren and if used on Prismarine it will transform in a Siren Shrine. Tamed sirens can change colors if you give them kelp or corals.
Существо: ars_elemental:siren_entity
The Shrine will slowly generate fishing loot items over time, asking for source after each cycle. The number of items and chance of getting a treasure will increase if many different water animals and plants are near the Shrine. You should build an aquarium or pond around the Shrine, to let your sirens have fun. [Note: it will take some time to update the score].