Ectocarpus siliculosus
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 197
Spongonema tomentosum
- Group
- Seaweeds and algae
- Peak month
- June
- Records since 2000
- 193
Ectocarpus crouaniorum
- Group
- Seaweeds and algae
- Records since 2000
- 98
- Kingdom
- Chromista
Ectocarpus fasciculatus
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 87