Where has the water flea been recorded?

Evadne nordmanni occurrence evidence comes from 3,629 records in 12 countries and territories, from 1957 to 2026. Most records come from Sweden.

• 3,629 records
• 12 places
• 45 years recorded
• Branchiopoda class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: August. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.

Records over time

Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.

Where water flea has been recorded

The countries below show where occurrence evidence exists for water flea. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.