Smooth cat's-ear
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 241
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- Biodiversity List – Northern Ireland
Biodiversity List – Northern Ireland
349 species
Brackish cockle
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 239
Brindled ochre
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 238
Wood tiger
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 238
A bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 236
A burrowing sea cucumber
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 236
Long-finned pilot whale
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 234
Figure of eight
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 233
A hydnoid fungi
- Group
- Fungi
- Peak month
- September
- Records since 2000
- 228
Copper diver
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 227
Yellow bird's-nest
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 225
Meylan's pouchwort
- Group
- Liverworts
- Peak month
- February
- Records since 2000
- 223
A stalked jellyfish
- Group
- Jellyfish, corals and anemones
- Peak month
- September
- Records since 2000
- 217
Mullein wave
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 216
Relative diver
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 214
Forester
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 213
A bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 206
Real's wood white
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 205
Funck's rustwort
- Group
- Liverworts
- Peak month
- August
- Records since 2000
- 200
A waxcap
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 198
A solitary bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 197
Beautiful grass snail
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 197
Chalk rock-bristle
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 195
A bee
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 194
A bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 190
Cornish Heath
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 185
Spring vetch
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 182
Pennyroyal
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 179
Few-Flowered Sedge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 178
A chiton
- Group
- Molluscs
- Peak month
- October
- Records since 2000
- 166
Arctic diver
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 166
Plaited snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 162
A weevil
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 160
Small Eggar
- Group
- Butterflies and moths
- Peak month
- May
- Records since 2000
- 158
Fan mussel
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 149
Point snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 149
A hydnoid fungi
- Group
- Fungi
- Peak month
- August
- Records since 2000
- 148
Annual knawel
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 148
Field hornwort
- Group
- Hornworts
- Peak month
- November
- Records since 2000
- 148
Upland frenchman
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 148
Spattered diver
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 147
Holly Fern
- Group
- Ferns and horsetails
- Peak month
- May
- Records since 2000
- 146
Pointed-leaved stubble-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 146
A hydroid
- Group
- Jellyfish, corals and anemones
- Peak month
- June
- Records since 2000
- 143
Seaside Centaury
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 129
Sharp’s parallel diver
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 127
Bristle-leaf
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 126
Small-flowered catchfly
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 126