DiscoverSpeciesOther invertebrates
Bristle Cage Worm
Flabelligera bicolor
- Usual depth0–3 m
- Water temperature9–18 °C
- Best monthsApril, May, and August
- How commonRare
Photo credit: (c) catchwords, some rights reserved (CC BY) · CC BY · iNaturalist
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 9 records
- February: 11 records
- March: 8 records
- April: 20 records
- May: 18 records
- June: 12 records
- July: 14 records
- August: 24 records
- September: 15 records
- October: 15 records
- November: 11 records
- December: 14 records
Depth and water temperature
Depth
Mostly recorded at 0–3 m · Deepest record: 3 m
Water temperature
Recorded in surface water of 9–18 °C
Photos
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Christopher Stephens, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) Saryu Mae 前 朝琉, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Saryu Mae 前 朝琉, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Shaun, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Oscar Dove, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Bristle Cage Worm
Other scientific names: Flabelligera lingulata, Flabelligera semiannulata, Pherusa bicolor, Siphonostoma antarcticum
Similar species
Flabby bristle-wormFlabelligera affinis
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Conservation status as published by GBIF (IUCN Red List).
- 61 open-data records from 1926 to 1999.
- Species data updated November 2, 2026.
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