Gwynedd — county
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 774
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 774
- Group
- Fungi
- Peak month
- May
- Records since 2000
- 771
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 770
- Group
- Liverworts
- Peak month
- February
- Records since 2000
- 763
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 762
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 758
- Group
- Caddisflies
- Peak month
- July
- Records since 2000
- 756
- Group
- Seaweeds and algae
- Peak month
- October
- Records since 2000
- 756
- Group
- Lichens
- Peak month
- October
- Records since 2000
- 750
- Group
- True flies
- Peak month
- August
- Records since 2000
- 749
- Group
- Liverworts
- Peak month
- June
- Records since 2000
- 743
- Group
- Lichens
- Peak month
- December
- Records since 2000
- 737
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 731
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 727
- Group
- True flies
- Peak month
- June
- Records since 2000
- 726
- Group
- Seaweeds and algae
- Peak month
- April
- Records since 2000
- 725
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 721
- Group
- True flies
- Peak month
- June
- Records since 2000
- 720
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 692
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 684
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 681
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 679
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 674
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 667
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 665
- Group
- Crustaceans
- Peak month
- March
- Records since 2000
- 653
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 650
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 646
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 640
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 638
- Group
- True flies
- Peak month
- June
- Records since 2000
- 638
- Group
- Stoneflies
- Peak month
- April
- Records since 2000
- 634
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 631
- Group
- Stoneflies
- Peak month
- April
- Records since 2000
- 630
- Group
- Molluscs
- Peak month
- July
- Records since 2000
- 629
- Group
- Seaweeds and algae
- Peak month
- September
- Records since 2000
- 626
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 625
- Group
- Mosses
- Peak month
- September
- Records since 2000
- 617
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 616
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 613
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 609
- Group
- Lichens
- Peak month
- May
- Records since 2000
- 607
- Group
- Liverworts
- Peak month
- June
- Records since 2000
- 607
- Group
- Worms (annelids)
- Peak month
- September
- Records since 2000
- 606
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 600
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 596
- Group
- Mayflies
- Peak month
- April
- Records since 2000
- 593