(Great or Northern) Crested Newt
- Group
- Amphibians
- Peak month
- May
- Records since 2000
- 39,193
Described in 1768
20 species
Plumose Anemone
- Group
- Jellyfish, corals and anemones
- Peak month
- July
- Records since 2000
- 5,037
Hydroides norvegica
- Group
- Worms (annelids)
- Peak month
- May
- Records since 2000
- 3,720
Lizard Bark Louse
- Group
- Other insects
- Peak month
- October
- Records since 2000
- 2,960
Greater forkbeard
- Group
- Fish
- Peak month
- November
- Records since 2000
- 2,922
Thick-Lipped Dog Whelk
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,157
Clover Seed Weevil
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 888
Common wall lizard
- Group
- Reptiles
- Peak month
- August
- Records since 2000
- 508
Hippasteria phrygiana
- Group
- Starfish and sea urchins
- Peak month
- August
- Records since 2000
- 420
Natterjack toad
- Group
- Amphibians
- Peak month
- April
- Records since 2000
- 406
Dolichopeza albipes
- Group
- True flies
- Peak month
- May
- Records since 2000
- 387
Nebria rufescens
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 265
Amaurobius fenestralis
- Group
- Spiders
- Peak month
- August
- Records since 2000
- 218
Patrobus atrorufus
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 163
Smooth snake
- Group
- Reptiles
- Peak month
- April
- Records since 2000
- 128
Boreotrophon truncatus
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 125
Black Lark
- Group
- Birds
- Peak month
- June
- Records since 2000
- 118
Alpine Newt
- Group
- Amphibians
- Peak month
- March
- Records since 2000
- 109
White-spotted Sable
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 90
Common Midwife Toad
- Group
- Amphibians
- Peak month
- July
- Records since 2000
- 79