Atlantic herring, Herring
- Group
- Fish
- Records since 2000
- 177,966
- Scientific name
- Clupea harengus
Grey Gurnard
- Group
- Fish
- Records since 2000
- 139,814
- Scientific name
- Eutrigla gurnardus
Norway Pout
- Group
- Fish
- Records since 2000
- 75,589
- Scientific name
- Trisopterus esmarkii
European sprat, Sprat
- Group
- Fish
- Records since 2000
- 53,026
- Scientific name
- Sprattus sprattus
Veined squid
- Group
- Molluscs
- Records since 2000
- 45,144
- Scientific name
- Loligo forbesii
Argentine
- Group
- Fish
- Records since 2000
- 38,908
- Scientific name
- Argentina sphyraena
European common squid
- Group
- Molluscs
- Records since 2000
- 23,430
- Scientific name
- Alloteuthis subulata
Natterer's Bat
- Group
- Mammals
- Records since 2000
- 13,257
- Scientific name
- Myotis nattereri
Surmullet, Striped Red Mullet
- Group
- Fish
- Records since 2000
- 9,136
- Scientific name
- Mullus surmuletus
European anchovy, Anchovy
- Group
- Fish
- Records since 2000
- 6,510
- Scientific name
- Engraulis encrasicolus
Greater horseshoe bat
- Group
- Mammals
- Records since 2000
- 6,208
- Scientific name
- Rhinolophus ferrumequinum
Snowdrop
- Group
- Flowering plants
- Records since 2000
- 5,071
- Scientific name
- Galanthus nivalis
Broadtail Shortfin Squid
- Group
- Molluscs
- Records since 2000
- 4,849
- Scientific name
- Illex coindetii
Giant Blackberry
- Group
- Flowering plants
- Records since 2000
- 3,291
- Scientific name
- Rubus ulmifolius
Prickly Featherwort
- Group
- Liverworts
- Records since 2000
- 3,205
- Scientific name
- Plagiochila spinulosa
Winter Aconite
- Group
- Flowering plants
- Records since 2000
- 2,816
- Scientific name
- Eranthis hyemalis
Chaetocladius piger
- Group
- True flies
- Records since 2000
- 2,768
- Peak month
- February
Slender Bristle-moss
- Group
- Mosses
- Records since 2000
- 2,581
- Scientific name
- Orthotrichum tenellum
Mueller's pearlside
- Group
- Fish
- Records since 2000
- 2,476
- Scientific name
- Maurolicus muelleri
Psychoda grisescens
- Group
- True flies
- Records since 2000
- 2,409
- Peak month
- February
Crystal Goby
- Group
- Fish
- Records since 2000
- 2,046
- Scientific name
- Crystallogobius linearis
Red-breasted Goose
- Group
- Birds
- Records since 2000
- 1,944
- Scientific name
- Branta ruficollis
Powdered Speckled Shield Lichen
- Group
- Lichens
- Records since 2000
- 1,640
- Scientific name
- Punctelia jeckeri
Fivebeard rockling
- Group
- Fish
- Records since 2000
- 1,563
- Scientific name
- Ciliata mustela
Spotty Featherwort
- Group
- Liverworts
- Records since 2000
- 1,512
- Scientific name
- Plagiochila punctata
Entomobrya intermedia
- Group
- Springtails
- Records since 2000
- 1,503
- Peak month
- February
Killarney Featherwort
- Group
- Liverworts
- Records since 2000
- 1,485
- Scientific name
- Plagiochila bifaria
Pale Brindled Beauty
- Group
- Butterflies and moths
- Records since 2000
- 1,448
- Scientific name
- Phigalia pilosaria
Trichocera regelationis
- Group
- True flies
- Records since 2000
- 1,193
- Peak month
- February
Dendrographa decolorans
- Group
- Lichens
- Records since 2000
- 1,107
- Peak month
- February
Rosulabryum moravicum
- Group
- Mosses
- Records since 2000
- 1,081
- Peak month
- February
Micropsectra contracta
- Group
- True flies
- Records since 2000
- 1,008
- Peak month
- February
Peniophora cinerea
- Group
- Fungi
- Records since 2000
- 987
- Peak month
- February
Cartilage Lichen
- Group
- Lichens
- Records since 2000
- 951
- Scientific name
- Ramalina fraxinea
Bacidia biatorina
- Group
- Lichens
- Records since 2000
- 941
- Peak month
- February
Grainy Shadow-crust Lichen
- Group
- Lichens
- Records since 2000
- 929
- Scientific name
- Hyperphyscia adglutinata
Green Shield-moss
- Group
- Mosses
- Records since 2000
- 897
- Scientific name
- Buxbaumia viridis
Striped seasnail, Sea-snail
- Group
- Fish
- Records since 2000
- 871
- Scientific name
- Liparis liparis
Spring Usher
- Group
- Butterflies and moths
- Records since 2000
- 812
- Scientific name
- Agriopis leucophaearia
Corynoptera trepida
- Group
- True flies
- Records since 2000
- 805
- Peak month
- February
Lumpfish, Lumpsucker
- Group
- Fish
- Records since 2000
- 804
- Scientific name
- Cyclopterus lumpus
Zygodon stirtonii
- Group
- Mosses
- Records since 2000
- 791
- Peak month
- February
Early Crocus
- Group
- Flowering plants
- Records since 2000
- 770
- Scientific name
- Crocus tommasinianus
Deceptive Featherwort
- Group
- Liverworts
- Records since 2000
- 763
- Scientific name
- Pseudomarsupidium decipiens
Gadiculus thori
- Group
- Fish
- Records since 2000
- 754
- Peak month
- February
Phacidium lauri
- Group
- Fungi
- Records since 2000
- 722
- Peak month
- February
Cirrophorus branchiatus
- Group
- Worms (annelids)
- Records since 2000
- 707
- Peak month
- February
Springtail
- Group
- Springtails
- Records since 2000
- 706
- Scientific name
- Entomobrya albocincta