Odontosyllis gibba
- Peak month
- August
- Records since 2000
- 1,800
- Group
- Worms (annelids)
Syllidia armata
- Peak month
- May
- Records since 2000
- 1,770
- Group
- Worms (annelids)
Schistomeringos rudolphi
- Peak month
- July
- Records since 2000
- 1,758
- Group
- Worms (annelids)
Ophryotrocha hartmanni
- Peak month
- July
- Records since 2000
- 1,754
- Group
- Worms (annelids)
Red Worm
- Peak month
- October
- Records since 2000
- 1,748
- Scientific name
- Lumbricus rubellus
Hesionura elongata
- Peak month
- July
- Records since 2000
- 1,682
- Group
- Worms (annelids)
Malmgrenia ljungmani
- Peak month
- August
- Records since 2000
- 1,660
- Group
- Worms (annelids)
Apistobranchus tullbergi
- Peak month
- July
- Records since 2000
- 1,594
- Group
- Worms (annelids)
Harmothoe extenuata
- Peak month
- August
- Records since 2000
- 1,568
- Group
- Worms (annelids)
Comb-toothed Nereid
- Peak month
- May
- Records since 2000
- 1,539
- Scientific name
- Platynereis dumerilii
Prionospio multibranchiata
- Peak month
- August
- Records since 2000
- 1,536
- Group
- Worms (annelids)
Paranaitis kosteriensis
- Peak month
- June
- Records since 2000
- 1,521
- Group
- Worms (annelids)
Great snail-leech
- Peak month
- September
- Records since 2000
- 1,516
- Scientific name
- Glossiphonia complanata
Eulalia bilineata
- Peak month
- August
- Records since 2000
- 1,507
- Group
- Worms (annelids)
Myxicola infundibulum
- Peak month
- June
- Records since 2000
- 1,499
- Group
- Worms (annelids)
Spio martinensis
- Peak month
- June
- Records since 2000
- 1,495
- Group
- Worms (annelids)
Rosy-tip Worm
- Peak month
- April
- Records since 2000
- 1,481
- Scientific name
- Aporrectodea rosea
Nephtys assimilis
- Peak month
- June
- Records since 2000
- 1,468
- Group
- Worms (annelids)
Sphaerosyllis hystrix
- Peak month
- August
- Records since 2000
- 1,466
- Group
- Worms (annelids)
Prosphaerosyllis tetralix
- Peak month
- April
- Records since 2000
- 1,461
- Group
- Worms (annelids)
Phisidia aurea
- Peak month
- August
- Records since 2000
- 1,450
- Group
- Worms (annelids)
Bloodworm
- Peak month
- April
- Records since 2000
- 1,437
- Scientific name
- Baltidrilus costatus
Peresiella clymenoides
- Peak month
- May
- Records since 2000
- 1,416
- Group
- Worms (annelids)
Nereis zonata
- Peak month
- August
- Records since 2000
- 1,415
- Group
- Worms (annelids)
Chone duneri
- Peak month
- July
- Records since 2000
- 1,411
- Group
- Worms (annelids)
Sigalion mathildae
- Peak month
- June
- Records since 2000
- 1,411
- Group
- Worms (annelids)
Goniadella gracilis
- Peak month
- July
- Records since 2000
- 1,408
- Group
- Worms (annelids)
Strawberry worm
- Peak month
- July
- Records since 2000
- 1,407
- Scientific name
- Eupolymnia nebulosa
Bristleworm
- Peak month
- August
- Records since 2000
- 1,395
- Scientific name
- Hyalinoecia tubicola
Harmothoe glabra
- Peak month
- June
- Records since 2000
- 1,390
- Group
- Worms (annelids)
Parchment Worm
- Peak month
- August
- Records since 2000
- 1,390
- Scientific name
- Chaetopterus variopedatus
Kirkegaardia dorsobranchialis
- Peak month
- April
- Records since 2000
- 1,359
- Group
- Worms (annelids)
Aricidea cerrutii
- Peak month
- May
- Records since 2000
- 1,346
- Group
- Worms (annelids)
Lysidice ninetta
- Peak month
- August
- Records since 2000
- 1,343
- Group
- Worms (annelids)
Nereimyra punctata
- Peak month
- July
- Records since 2000
- 1,293
- Group
- Worms (annelids)
Bristleworm
- Peak month
- September
- Records since 2000
- 1,274
- Scientific name
- Polydora ciliata
Dipolydora quadrilobata
- Peak month
- May
- Records since 2000
- 1,269
- Group
- Worms (annelids)
Chestnut Worm
- Peak month
- April
- Records since 2000
- 1,255
- Scientific name
- Lumbricus castaneus
Long-worm
- Peak month
- October
- Records since 2000
- 1,232
- Scientific name
- Aporrectodea longa
Bristleworm
- Peak month
- June
- Records since 2000
- 1,225
- Scientific name
- Ampharete falcata
Aponuphis bilineata
- Peak month
- May
- Records since 2000
- 1,197
- Group
- Worms (annelids)
Amaeana trilobata
- Peak month
- August
- Records since 2000
- 1,186
- Group
- Worms (annelids)
Eurysyllis tuberculata
- Peak month
- August
- Records since 2000
- 1,185
- Group
- Worms (annelids)
Odontosyllis fulgurans
- Peak month
- August
- Records since 2000
- 1,175
- Group
- Worms (annelids)
Spotted Leafworm
- Peak month
- June
- Records since 2000
- 1,155
- Scientific name
- Phyllodoce maculata
Syllis garciai
- Peak month
- August
- Records since 2000
- 1,155
- Group
- Worms (annelids)
Malmgrenia marphysae
- Peak month
- August
- Records since 2000
- 1,153
- Group
- Worms (annelids)
Leitoscoloplos mammosus
- Peak month
- May
- Records since 2000
- 1,140
- Group
- Worms (annelids)