| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| 2 | 13/09/2010 | Break Water Fort, Plymouth, Devon On the north side of the breakwater within Plymouth Sound, Devon where high currents flow either side. area was a relitivly kelp free area |
observed on a safety stop at 6m growing on the man made Breakwater Fort | Undaria pinnatifida |
| 1 | 31/08/2011 | Meadfoot Beach Rocky beach in Torquay with high tidal range |
seen attached to small rock on the beach. only the stipe and holdfast remained, no evidence of the broad frond | Undaria pinnatifida |