Where has the Common Siphonophore been recorded?

Nanomia bijuga occurrence evidence comes from 2,809 records in 27 countries and territories, from 1895 to 2025. Most records come from Australia.

• 2,809 records
• 27 places
• 27 years recorded
• Hydrozoa class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: September. 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 Common Siphonophore has been recorded

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