Eelgrass 2009 (Island) (0)
| Z japonica |
| Z marina |
| Z marina & Z japonica |
| Absent |
| Z marina or Z japonica |
Eelgrass 2010 (Island) (1)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2011 (Island) (2)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2012 (Island) (3)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2013 (Island) (4)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2014 (Island) (5)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2015 (Island) (6)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2016 (Island) (7)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2017 (Island) (8)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2018 (Island) (9)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
Eelgrass 2019 (Island) (10)
|
| Z japonica |
|
| Z marina |
|
| Z marina & Z japonica |
|
| Absent |
|
| Z marina or Z japonica |
|