- Who
- Atlantis Sanya
- What
- 110 people
- Where
- China (Sanya)
- When
The largest underwater mermaid show consists of 110 people, and was achieved by Atlantis Sanya (China) in Sanya, Hainan, China, on 28 April 2021.
The attempt was part of the celebrations of the third anniversary of Atlantis Sanya.