Where has the reversed glass sponge been recorded?

Farrea occa occurrence evidence comes from 10,573 records in 19 countries and territories, from 1874 to 2023. Most records come from United States.

• 10,573 records
• 19 places
• 33 years recorded
• Hexactinellida class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: May. 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 reversed glass sponge has been recorded

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