Tubificoides galiciensis
- Peak month
- May
- Records since 2000
- 716
- Group
- Worms (annelids)
Cirrophorus branchiatus
- Peak month
- February
- Records since 2000
- 707
- Group
- Worms (annelids)
Mysta picta
- Peak month
- July
- Records since 2000
- 699
- Group
- Worms (annelids)
Pherusa plumosa
- Peak month
- June
- Records since 2000
- 694
- Group
- Worms (annelids)
Scoletoma fragilis
- Peak month
- July
- Records since 2000
- 684
- Group
- Worms (annelids)
Pseudonotomastus southerni
- Peak month
- August
- Records since 2000
- 680
- Group
- Worms (annelids)
Polydora mud worm
- Peak month
- June
- Records since 2000
- 675
- Scientific name
- Polydora cornuta
Manayunkia aestuarina
- Peak month
- March
- Records since 2000
- 674
- Group
- Worms (annelids)
Sinistral spiral tubeworm
- Peak month
- September
- Records since 2000
- 668
- Scientific name
- Spirorbis spirorbis
Tubificoides swirencoides
- Peak month
- May
- Records since 2000
- 667
- Group
- Worms (annelids)
Syllis pontxioi
- Peak month
- August
- Records since 2000
- 665
- Group
- Worms (annelids)
Myriochele danielsseni
- Peak month
- May
- Records since 2000
- 664
- Group
- Worms (annelids)
Coral worm
- Peak month
- August
- Records since 2000
- 660
- Scientific name
- Filograna implexa
Lysilla loveni
- Peak month
- July
- Records since 2000
- 658
- Group
- Worms (annelids)
Hesiospina aurantiaca
- Peak month
- August
- Records since 2000
- 652
- Group
- Worms (annelids)
Ephesiella abyssorum
- Peak month
- April
- Records since 2000
- 645
- Group
- Worms (annelids)
Acromegalomma vesiculosum
- Peak month
- September
- Records since 2000
- 636
- Group
- Worms (annelids)
Euchone rubrocincta
- Peak month
- September
- Records since 2000
- 632
- Group
- Worms (annelids)
Cockspur [worm]
- Peak month
- October
- Records since 2000
- 629
- Scientific name
- Bimastos rubidus
Scalibregma stenocerum
- Peak month
- August
- Records since 2000
- 628
- Group
- Worms (annelids)
Malmgrenia darbouxi
- Peak month
- August
- Records since 2000
- 626
- Group
- Worms (annelids)
Lysilla nivea
- Peak month
- August
- Records since 2000
- 621
- Group
- Worms (annelids)
Pholoe pallida
- Peak month
- October
- Records since 2000
- 620
- Group
- Worms (annelids)
Amphitritides gracilis
- Peak month
- August
- Records since 2000
- 611
- Group
- Worms (annelids)
Biocular leech
- Peak month
- September
- Records since 2000
- 606
- Scientific name
- Helobdella stagnalis
Malmgrenia mcintoshi
- Peak month
- August
- Records since 2000
- 605
- Group
- Worms (annelids)
Microclymene tricirrata
- Peak month
- July
- Records since 2000
- 596
- Group
- Worms (annelids)
Spio goniocephala
- Peak month
- July
- Records since 2000
- 594
- Group
- Worms (annelids)
Iridescent Worm
- Peak month
- August
- Records since 2000
- 593
- Scientific name
- Arabella iricolor
Notophyllum foliosum
- Peak month
- August
- Records since 2000
- 589
- Group
- Worms (annelids)
Pterocirrus macroceros
- Peak month
- August
- Records since 2000
- 584
- Group
- Worms (annelids)
Trichobranchus glacialis
- Peak month
- July
- Records since 2000
- 581
- Group
- Worms (annelids)
Notocirrus scoticus
- Peak month
- June
- Records since 2000
- 570
- Group
- Worms (annelids)
Cirratulus caudatus
- Peak month
- May
- Records since 2000
- 559
- Group
- Worms (annelids)
Subadyte pellucida
- Peak month
- August
- Records since 2000
- 559
- Group
- Worms (annelids)
Glyphohesione klatti
- Peak month
- June
- Records since 2000
- 543
- Group
- Worms (annelids)
Sige fusigera
- Peak month
- August
- Records since 2000
- 542
- Group
- Worms (annelids)
Syllis gracilis
- Peak month
- August
- Records since 2000
- 542
- Group
- Worms (annelids)
Parougia caeca
- Peak month
- May
- Records since 2000
- 541
- Group
- Worms (annelids)
Red rock worm
- Peak month
- June
- Records since 2000
- 539
- Scientific name
- Marphysa sanguinea
Heteroclymene robusta
- Peak month
- July
- Records since 2000
- 528
- Group
- Worms (annelids)
Paraonis fulgens
- Peak month
- September
- Records since 2000
- 519
- Group
- Worms (annelids)
Ampharete baltica
- Peak month
- June
- Records since 2000
- 517
- Group
- Worms (annelids)
Laonome kroyeri
- Peak month
- September
- Records since 2000
- 507
- Group
- Worms (annelids)
Pholoe assimilis
- Peak month
- October
- Records since 2000
- 500
- Group
- Worms (annelids)
Lanassa venusta
- Peak month
- August
- Records since 2000
- 499
- Group
- Worms (annelids)
Streptosyllis bidentata
- Peak month
- July
- Records since 2000
- 499
- Group
- Worms (annelids)
Little Tree Worm
- Peak month
- April
- Records since 2000
- 492
- Scientific name
- Satchellius mammalis