Eulalia mustela
- Peak month
- August
- Records since 2000
- 5,299
- Group
- Worms (annelids)
Sphaerosyllis taylori
- Peak month
- May
- Records since 2000
- 5,192
- Group
- Worms (annelids)
Eumida bahusiensis
- Peak month
- July
- Records since 2000
- 5,173
- Group
- Worms (annelids)
Glycerine Worm
- Peak month
- June
- Records since 2000
- 5,164
- Scientific name
- Glycera tridactyla
Honeycomb Worm
- Peak month
- July
- Records since 2000
- 5,154
- Scientific name
- Sabellaria alveolata
Eunereis longissima
- Peak month
- August
- Records since 2000
- 5,053
- Group
- Worms (annelids)
Blow Lug, Lugworm, Lobworm
- Peak month
- August
- Records since 2000
- 5,017
- Scientific name
- Arenicola marina
Chaetozone christiei
- Peak month
- June
- Records since 2000
- 4,906
- Group
- Worms (annelids)
Pista cristata
- Peak month
- August
- Records since 2000
- 4,898
- Group
- Worms (annelids)
Twelve-scaled Worm
- Peak month
- August
- Records since 2000
- 4,887
- Scientific name
- Lepidonotus squamatus
Square-tailed Worm
- Peak month
- April
- Records since 2000
- 4,751
- Scientific name
- Eiseniella tetraedra
Magelona filiformis
- Peak month
- June
- Records since 2000
- 4,738
- Group
- Worms (annelids)
Magelona johnstoni
- Peak month
- June
- Records since 2000
- 4,540
- Group
- Worms (annelids)
Harmothoe impar
- Peak month
- June
- Records since 2000
- 4,409
- Group
- Worms (annelids)
Scalibregma celticum
- Peak month
- July
- Records since 2000
- 4,353
- Group
- Worms (annelids)
Glycinde nordmanni
- Peak month
- July
- Records since 2000
- 4,323
- Group
- Worms (annelids)
Prionospio cirrifera
- Peak month
- August
- Records since 2000
- 4,321
- Group
- Worms (annelids)
Aonides oxycephala
- Peak month
- August
- Records since 2000
- 4,315
- Group
- Worms (annelids)
Red Thread-gilled Worm
- Peak month
- June
- Records since 2000
- 4,250
- Scientific name
- Cirriformia tentaculata
Sea Mouse
- Peak month
- September
- Records since 2000
- 4,247
- Scientific name
- Aphrodita aculeata
Twin Fan Worm
- Peak month
- May
- Records since 2000
- 4,203
- Scientific name
- Bispira volutacornis
Podarkeopsis capensis
- Peak month
- June
- Records since 2000
- 4,166
- Group
- Worms (annelids)
Oxydromus flexuosus
- Peak month
- June
- Records since 2000
- 4,148
- Group
- Worms (annelids)
Dipolydora caulleryi
- Peak month
- August
- Records since 2000
- 4,146
- Group
- Worms (annelids)
Pygospio worm
- Peak month
- June
- Records since 2000
- 4,130
- Scientific name
- Pygospio elegans
Euclymene oerstedii
- Peak month
- May
- Records since 2000
- 4,025
- Group
- Worms (annelids)
Glycera oxycephala
- Peak month
- August
- Records since 2000
- 3,980
- Group
- Worms (annelids)
Malacoceros fuliginosus
- Peak month
- June
- Records since 2000
- 3,920
- Group
- Worms (annelids)
Marine worm
- Peak month
- May
- Records since 2000
- 3,912
- Scientific name
- Pseudopolydora paucibranchiata
Sthenelais limicola
- Peak month
- June
- Records since 2000
- 3,852
- Group
- Worms (annelids)
Levinsenia gracilis
- Peak month
- May
- Records since 2000
- 3,848
- Group
- Worms (annelids)
Lumbrineris cingulata
- Peak month
- September
- Records since 2000
- 3,841
- Group
- Worms (annelids)
Hydroides norvegica
- Peak month
- May
- Records since 2000
- 3,720
- Group
- Worms (annelids)
Tubificoides pseudogaster
- Peak month
- June
- Records since 2000
- 3,715
- Group
- Worms (annelids)
Nephtys caeca
- Peak month
- June
- Records since 2000
- 3,601
- Group
- Worms (annelids)
Bristleworm
- Peak month
- June
- Records since 2000
- 3,459
- Scientific name
- Aphelochaeta marioni
Lysidice unicornis
- Peak month
- August
- Records since 2000
- 3,415
- Group
- Worms (annelids)
Nephtys incisa
- Peak month
- June
- Records since 2000
- 3,410
- Group
- Worms (annelids)
Golden trumpet worm
- Peak month
- May
- Records since 2000
- 3,367
- Scientific name
- Amphictene auricoma
Chaetozone gibber
- Peak month
- June
- Records since 2000
- 3,316
- Group
- Worms (annelids)
Estuary ragworm
- Peak month
- September
- Records since 2000
- 3,299
- Scientific name
- Hediste diversicolor
Pseudopolydora pulchra
- Peak month
- July
- Records since 2000
- 3,190
- Group
- Worms (annelids)
Paraspio decorata
- Peak month
- April
- Records since 2000
- 3,105
- Group
- Worms (annelids)
Gallery Worm
- Peak month
- June
- Records since 2000
- 3,083
- Scientific name
- Capitella capitata
Exogone verugera
- Peak month
- July
- Records since 2000
- 3,056
- Group
- Worms (annelids)
Ophelina acuminata
- Peak month
- June
- Records since 2000
- 2,953
- Group
- Worms (annelids)
Tubificoides amplivasatus
- Peak month
- May
- Records since 2000
- 2,899
- Group
- Worms (annelids)
Ampharete finmarchica
- Peak month
- July
- Records since 2000
- 2,896
- Group
- Worms (annelids)