Websterinereis glauca
- Peak month
- June
- Records since 2000
- 244
- Group
- Worms (annelids)
Aphelochaeta filiformis
- Peak month
- July
- Records since 2000
- 243
- Group
- Worms (annelids)
Gyptis propinqua
- Peak month
- September
- Records since 2000
- 242
- Group
- Worms (annelids)
Praxillella gracilis
- Peak month
- September
- Records since 2000
- 241
- Group
- Worms (annelids)
Malacoceros tetracerus
- Peak month
- June
- Records since 2000
- 240
- Group
- Worms (annelids)
Alentia gelatinosa
- Peak month
- September
- Records since 2000
- 238
- Group
- Worms (annelids)
Sosane wahrbergi
- Peak month
- August
- Records since 2000
- 238
- Group
- Worms (annelids)
Loimia medusa
- Peak month
- May
- Records since 2000
- 237
- Group
- Worms (annelids)
Brada inhabilis
- Peak month
- July
- Records since 2000
- 235
- Group
- Worms (annelids)
Pectinaria belgica
- Peak month
- June
- Records since 2000
- 235
- Group
- Worms (annelids)
Neogyptis rosea
- Peak month
- October
- Records since 2000
- 234
- Group
- Worms (annelids)
Goniada norvegica
- Peak month
- July
- Records since 2000
- 233
- Group
- Worms (annelids)
Tubificoides insularis
- Peak month
- May
- Records since 2000
- 233
- Group
- Worms (annelids)
Samytha sexcirrata
- Peak month
- August
- Records since 2000
- 232
- Group
- Worms (annelids)
Aricidea simonae
- Peak month
- May
- Records since 2000
- 230
- Group
- Worms (annelids)
Eusyllis lamelligera
- Peak month
- August
- Records since 2000
- 230
- Group
- Worms (annelids)
Capitella minima
- Peak month
- September
- Records since 2000
- 229
- Group
- Worms (annelids)
Lumbricus festivus
- Peak month
- April
- Records since 2000
- 223
- Group
- Worms (annelids)
Erpobdella testacea
- Peak month
- September
- Records since 2000
- 218
- Group
- Worms (annelids)
Paranais litoralis
- Peak month
- April
- Records since 2000
- 218
- Group
- Worms (annelids)
Amphitrite cirrata
- Peak month
- June
- Records since 2000
- 217
- Group
- Worms (annelids)
Paradoneis ilvana
- Peak month
- August
- Records since 2000
- 216
- Group
- Worms (annelids)
Circeis spirillum
- Peak month
- September
- Records since 2000
- 214
- Group
- Worms (annelids)
Nereiphylla rubiginosa
- Peak month
- April
- Records since 2000
- 214
- Group
- Worms (annelids)
Tubificoides diazi
- Peak month
- April
- Records since 2000
- 213
- Group
- Worms (annelids)
Mystides caeca
- Peak month
- July
- Records since 2000
- 208
- Group
- Worms (annelids)
Theromyzon tessulatum
- Peak month
- July
- Records since 2000
- 208
- Group
- Worms (annelids)
Aricidea laubieri
- Peak month
- May
- Records since 2000
- 206
- Group
- Worms (annelids)
Clymenella torquata
- Peak month
- May
- Records since 2000
- 206
- Group
- Worms (annelids)
Paramphitrite birulai
- Peak month
- October
- Records since 2000
- 206
- Group
- Worms (annelids)
Pelogenia arenosa
- Peak month
- August
- Records since 2000
- 206
- Group
- Worms (annelids)
Amblyosyllis formosa
- Peak month
- September
- Records since 2000
- 201
- Group
- Worms (annelids)
Eulalia clavigera
- Peak month
- March
- Records since 2000
- 199
- Group
- Worms (annelids)
Nereis pelagica
- Peak month
- May
- Records since 2000
- 199
- Group
- Worms (annelids)
Horse leech
- Peak month
- May
- Records since 2000
- 197
- Scientific name
- Haemopis sanguisuga
Eteone picta
- Peak month
- July
- Records since 2000
- 191
- Group
- Worms (annelids)
Leodice harassii
- Peak month
- June
- Records since 2000
- 190
- Group
- Worms (annelids)
Harmothoe clavigera
- Peak month
- May
- Records since 2000
- 188
- Group
- Worms (annelids)
Lipobranchius jeffreysii
- Peak month
- July
- Records since 2000
- 182
- Group
- Worms (annelids)
Trypanosyllis zebra
- Peak month
- June
- Records since 2000
- 178
- Group
- Worms (annelids)
Neoamphitrite affinis
- Peak month
- May
- Records since 2000
- 177
- Group
- Worms (annelids)
Streblosoma bairdi
- Peak month
- May
- Records since 2000
- 176
- Group
- Worms (annelids)
Apistobranchus tenuis
- Peak month
- May
- Records since 2000
- 173
- Group
- Worms (annelids)
Pseudomystides spinachia
- Peak month
- August
- Records since 2000
- 172
- Group
- Worms (annelids)
Nephtys pente
- Peak month
- May
- Records since 2000
- 167
- Group
- Worms (annelids)
Arenicolides ecaudata
- Peak month
- June
- Records since 2000
- 165
- Group
- Worms (annelids)
Psammodrilus balanoglossoides
- Peak month
- July
- Records since 2000
- 165
- Group
- Worms (annelids)
Ceratocephale loveni
- Peak month
- October
- Records since 2000
- 163
- Group
- Worms (annelids)