Fragilaria pectinalis
- Peak month
- April
- Records since 2000
- 114
- Group
- Seaweeds and algae
Osmundea truncata
- Peak month
- July
- Records since 2000
- 113
- Group
- Seaweeds and algae
Trachydiscus minutus
- Peak month
- January
- Records since 2000
- 113
- Group
- Seaweeds and algae
Dictyocha fibula
- Peak month
- October
- Records since 2000
- 111
- Group
- Seaweeds and algae
Ulva rigida
- Peak month
- August
- Records since 2000
- 111
- Group
- Seaweeds and algae
Acrochaetium parvulum
- Peak month
- June
- Records since 2000
- 110
- Group
- Seaweeds and algae
Cordylecladia erecta
- Peak month
- June
- Records since 2000
- 110
- Group
- Seaweeds and algae
Cymbella reichardtii
- Peak month
- September
- Records since 2000
- 110
- Group
- Seaweeds and algae
Ulva clathrata
- Peak month
- September
- Records since 2000
- 110
- Group
- Seaweeds and algae
Navicula antonii
- Peak month
- September
- Records since 2000
- 109
- Group
- Seaweeds and algae
Spongomorpha aeruginosa
- Peak month
- May
- Records since 2000
- 109
- Group
- Seaweeds and algae
Stauroneis kriegeri
- Peak month
- September
- Records since 2000
- 109
- Group
- Seaweeds and algae
Planothidium rostratum
- Peak month
- September
- Records since 2000
- 107
- Group
- Seaweeds and algae
Gracilaria longissima
- Peak month
- September
- Records since 2000
- 106
- Group
- Seaweeds and algae
Navicula acceptata
- Peak month
- September
- Records since 2000
- 106
- Group
- Seaweeds and algae
Navicula mutica
- Peak month
- September
- Records since 2000
- 106
- Group
- Seaweeds and algae
Parachlorella kessleri
- Peak month
- January
- Records since 2000
- 106
- Group
- Seaweeds and algae
Psammothidium grishunum
- Peak month
- April
- Records since 2000
- 105
- Group
- Seaweeds and algae
Trentepohlia aurea
- Peak month
- July
- Records since 2000
- 104
- Group
- Seaweeds and algae
Neochloris aquatica
- Peak month
- January
- Records since 2000
- 103
- Group
- Seaweeds and algae
Red seaweed
- Peak month
- July
- Records since 2000
- 103
- Scientific name
- Gracilaria bursa-pastoris
Synedra nana
- Peak month
- September
- Records since 2000
- 103
- Group
- Seaweeds and algae
Chordaria flagelliformis
- Peak month
- August
- Records since 2000
- 101
- Group
- Seaweeds and algae
Fragilaria elliptica
- Peak month
- September
- Records since 2000
- 101
- Group
- Seaweeds and algae
Luticola goeppertiana
- Peak month
- September
- Records since 2000
- 101
- Group
- Seaweeds and algae
Navicula slesvicensis
- Peak month
- April
- Records since 2000
- 101
- Group
- Seaweeds and algae
Cosmarium margaritiferum
- Peak month
- July
- Records since 2000
- 100
- Group
- Seaweeds and algae
Frustulia vulgaris
- Peak month
- September
- Records since 2000
- 100
- Group
- Seaweeds and algae
Humidophila contenta
- Peak month
- October
- Records since 2000
- 99
- Group
- Seaweeds and algae
Ulva pseudocurvata
- Peak month
- September
- Records since 2000
- 99
- Group
- Seaweeds and algae
Ectocarpus crouaniorum
- Records since 2000
- 98
- Group
- Seaweeds and algae
- Kingdom
- Chromista
Osmundea oederi
- Peak month
- June
- Records since 2000
- 98
- Group
- Seaweeds and algae
Synedra oxyrhynchus
- Peak month
- April
- Records since 2000
- 98
- Group
- Seaweeds and algae
Nitzschia closterium
- Peak month
- April
- Records since 2000
- 97
- Group
- Seaweeds and algae
Sporochnus pedunculatus
- Peak month
- August
- Records since 2000
- 97
- Group
- Seaweeds and algae
Achnanthes daonensis
- Peak month
- October
- Records since 2000
- 96
- Group
- Seaweeds and algae
Closterium dianae
- Peak month
- May
- Records since 2000
- 96
- Group
- Seaweeds and algae
Eunotia tenella
- Peak month
- May
- Records since 2000
- 96
- Group
- Seaweeds and algae
Nitzschia longissima
- Peak month
- September
- Records since 2000
- 94
- Group
- Seaweeds and algae
Nitzschia subacicularis
- Peak month
- September
- Records since 2000
- 94
- Group
- Seaweeds and algae
Porphyra dioica
- Peak month
- July
- Records since 2000
- 94
- Group
- Seaweeds and algae
Fragilaria construens
- Peak month
- September
- Records since 2000
- 93
- Group
- Seaweeds and algae
Marvania geminata
- Peak month
- January
- Records since 2000
- 93
- Group
- Seaweeds and algae
Stauroneis membranacea
- Peak month
- September
- Records since 2000
- 93
- Group
- Seaweeds and algae
Achnanthidium delicatulum
- Peak month
- May
- Records since 2000
- 92
- Group
- Seaweeds and algae
Trentepohlia abietina
- Peak month
- March
- Records since 2000
- 92
- Group
- Seaweeds and algae
Chaetoceros danicus
- Peak month
- May
- Records since 2000
- 91
- Group
- Seaweeds and algae
Eunotia rhomboidea
- Peak month
- September
- Records since 2000
- 91
- Group
- Seaweeds and algae