| Number seen/Abundance | Date | Location | Comments | Recorded by |
|---|---|---|---|---|
| Present | 2005-06-19 | Wreck of the Italia off St. Agnes, Scilly Isles. 39 meters deep, underwater visibility >12 meters, water temperature 13 degrees. No water speed and weather calm with variable 1!! Afternoon dive. Wreck broken up on rocks. |
Covered in Nudibranch egg strings and ribbons especially in shallower areas of wreckage. | Sonia Rowley |
| Common | 2005-06-20 | Wreck of the Cita, Scilly Isles. 35 meters deep, under water visibility 18 meters, water temperature 12 degrees. Weather excellent, no wind and no water current. Wreckage in amongst jewel anemone encrusted rocks. Morning dive. |
On wreckage, especially on side plates with egg spirals on. | Sonia Rowley |
| Common | 2009-10-25 | Bexhill on Sea Shingle shore at high tide |
Several clumps of twiglets washed up on shore - with other unidentified hydroids also attached to them | Nigel Sawyer |
| Uncommon | 17/06/2012 | Splash Point, Seaford Chalk platform and shingle beach |
Colony found on a clump of cuttlefish eggs | Nigel Sawyer |