Species: Fjæremark (Arenicola marina)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2023 | 1 | 1 | 1 | 1 |
| 2021 | 1 | 1 | 1 | 1 |
| 2019 | 1 | 3 | 3 | 3 |
| 2018 | 1 | 2 | 2 | 7 |
| 2016 | 1 | 2 | 2 | 2 |
| 2015 | 1 | 1 | 1 | 1 |
| 2014 | 1 | 3 | 3 | 7 |
| 2013 | 1 | 1 | 1 | 2 |
| 2010 | 1 | 1 | 1 | 1 |
| 2009 | 1 | 2 | 1 | 3 |
| 2008 | 1 | 1 | 1 | 2 |
| 2007 | 1 | 2 | 2 | 4 |
| 2006 | 1 | 2 | 1 | 3 |
| 2005 | 1 | 3 | 2 | 7 |
| 2004 | 1 | 8 | 5 | 15 |
| 2003 | 1 | 5 | 4 | 11 |
| 2002 | 1 | 4 | 4 | 6 |
| 2001 | 1 | 12 | 12 | 19 |
| 2000 | 1 | 12 | 12 | 24 |
| 1999 | 1 | 13 | 12 | 22 |
| 1998 | 1 | 36 | 33 | 71 |
| 1997 | 1 | 46 | 44 | 143 |
| 1996 | 1 | 125 | 121 | 354 |
| 1995 | 1 | 137 | 128 | 517 |
| 1994 | 1 | 163 | 157 | 417 |
| 1993 | 1 | 196 | 187 | 551 |
| Totalt alle år | 1 | 328 | 309 | 2194 |