Species: Chanelled Wrack (Pelvetia canaliculata)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|
| 2024 | 1 | 2 | 2 | 5 |
| 2023 | 1 | 2 | 2 | 3 |
| 2022 | 1 | 2 | 2 | 2 |
| 2021 | 1 | 7 | 5 | 14 |
| 2020 | 1 | 12 | 7 | 22 |
| 2019 | 1 | 13 | 11 | 36 |
| 2018 | 1 | 8 | 8 | 30 |
| 2017 | 1 | 10 | 10 | 41 |
| 2016 | 1 | 10 | 9 | 31 |
| 2015 | 1 | 8 | 7 | 18 |
| 2014 | 1 | 6 | 5 | 9 |
| 2013 | 1 | 5 | 3 | 8 |
| 2012 | 1 | 2 | 2 | 2 |
| 2011 | 1 | 1 | 1 | 1 |
| 2009 | 1 | 3 | 3 | 6 |
| 2008 | 1 | 2 | 2 | 2 |
| 2007 | 1 | 4 | 4 | 8 |
| 2006 | 1 | 4 | 4 | 5 |
| 2005 | 1 | 1 | 1 | 1 |
| 2004 | 1 | 13 | 8 | 32 |
| 2003 | 1 | 8 | 7 | 38 |
| 2002 | 1 | 9 | 9 | 23 |
| 2001 | 1 | 11 | 11 | 32 |
| 2000 | 1 | 18 | 18 | 67 |
| 1999 | 1 | 13 | 13 | 37 |
| 1998 | 1 | 36 | 37 | 98 |
| 1997 | 1 | 68 | 63 | 320 |
| 1996 | 1 | 107 | 107 | 542 |
| 1995 | 1 | 144 | 138 | 713 |
| 1994 | 1 | 176 | 168 | 948 |
| 1993 | 1 | 185 | 172 | 946 |
| Totalt alle år | 1 | 402 | 346 | 4040 |