# SimoOstra

- By: Janek Lass
- Date: 2023-05-31
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:SimoOstra.jpg)
- Rights: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/SimoOstra.jpg/1920px-SimoOstra.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

The photo shows a water flea belonging to the genus Simocephalus and an ostracod belonging to the species Physocypria kraepelini. The specimens were found in a city pond in Rakvere, Estonia.