Sand Star
- Group
- Starfish and sea urchins
- Peak month
- September
- Records since 2000
- 4,439
- Home
- Designations
- Biodiversity List – Northern Ireland
Biodiversity List – Northern Ireland
349 species
Copse Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 4,382
Common Juniper
- Group
- Conifers
- Peak month
- July
- Records since 2000
- 4,287
Knotted Wrack
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 4,248
Balearic Shearwater
- Group
- Birds
- Peak month
- August
- Records since 2000
- 4,086
Knot Grass [moth]
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 4,052
Roseate Tern
- Group
- Birds
- Peak month
- July
- Records since 2000
- 4,046
Bud-headed Groove-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 3,760
Rustic
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 3,742
Undulate Ray
- Group
- Fish
- Peak month
- October
- Records since 2000
- 3,705
Native Oyster
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 3,702
Horse-mussel
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 3,571
Gooden's Nomad Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 3,424
Common Quail
- Group
- Birds
- Peak month
- June
- Records since 2000
- 3,344
Buffish Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 3,293
Small Phoenix
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 3,255
Mottled Rustic
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,253
Large Heath
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 3,140
Sea-kale
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 3,139
Great Burnet
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 3,110
Garden Tiger
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,881
Common Maërl
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 2,671
Hill Cuckoo-Bee
- Group
- Bees, wasps and ants
- Peak month
- July
- Records since 2000
- 2,434
Moschatel
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 2,434
Shaded Broad-bar
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 2,423
Centre-barred Sallow
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 2,363
Beaded Chestnut
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 2,359
Circular crab
- Group
- Crustaceans
- Peak month
- August
- Records since 2000
- 2,199
Brindled Beauty
- Group
- Butterflies and moths
- Peak month
- April
- Records since 2000
- 2,168
Slender Sea Pen
- Group
- Jellyfish, corals and anemones
- Peak month
- August
- Records since 2000
- 2,139
Green-brindled Crescent
- Group
- Butterflies and moths
- Peak month
- October
- Records since 2000
- 2,094
Red-necked Phalarope
- Group
- Birds
- Peak month
- September
- Records since 2000
- 1,950
Dusky Brocade
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,890
Mouse Moth
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 1,878
Broom Moth
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,823
Petalwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 1,727
Tope shark, Tope
- Group
- Fish
- Peak month
- November
- Records since 2000
- 1,682
Short-beaked common dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,652
Common bottlenose dolphin
- Group
- Mammals
- Peak month
- August
- Records since 2000
- 1,558
Minke whale
- Group
- Mammals
- Peak month
- June
- Records since 2000
- 1,556
Dark-barred Twin-spot Carpet
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 1,520
Autumnal Rustic
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 1,490
Grey Dagger
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 1,456
Variegated Scallop
- Group
- Molluscs
- Peak month
- August
- Records since 2000
- 1,450
Leptosynapta bergensis
- Group
- Starfish and sea urchins
- Peak month
- June
- Records since 2000
- 1,428
Lesser Bulin
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 1,329
Wood Crane's-bill
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 1,280
Shoulder-Striped Wainscot
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 1,277