Pseudocuma longicorne
- Peak month
- April
- Records since 2000
- 3,104
- Group
- Crustaceans
Brown Shrimp
- Peak month
- September
- Records since 2000
- 3,094
- Scientific name
- Crangon crangon
Common Striped Woodlouse
- Peak month
- April
- Records since 2000
- 3,019
- Scientific name
- Philoscia muscorum
Common Prawn
- Peak month
- September
- Records since 2000
- 2,854
- Scientific name
- Palaemon serratus
Leptocheirus hirsutimanus
- Peak month
- August
- Records since 2000
- 2,848
- Group
- Crustaceans
Unciola crenatipalma
- Peak month
- August
- Records since 2000
- 2,843
- Group
- Crustaceans
Megamphopus cornutus
- Peak month
- August
- Records since 2000
- 2,806
- Group
- Crustaceans
Prideaux's hermit crab
- Peak month
- August
- Records since 2000
- 2,791
- Scientific name
- Pagurus prideaux
Common Pill Woodlouse
- Peak month
- April
- Records since 2000
- 2,783
- Scientific name
- Armadillidium vulgare
Synchelidium maculatum
- Peak month
- July
- Records since 2000
- 2,608
- Group
- Crustaceans
Aesop Shrimp
- Peak month
- August
- Records since 2000
- 2,474
- Scientific name
- Pandalus montagui
Apherusa bispinosa
- Peak month
- August
- Records since 2000
- 2,431
- Group
- Crustaceans
Spiny Squat lobster
- Peak month
- August
- Records since 2000
- 2,427
- Scientific name
- Galathea strigosa
Bathyporeia guilliamsoniana
- Peak month
- July
- Records since 2000
- 2,395
- Group
- Crustaceans
Dwarf swimming crab
- Peak month
- August
- Records since 2000
- 2,342
- Scientific name
- Liocarcinus pusillus
Upogebia deltaura
- Peak month
- August
- Records since 2000
- 2,332
- Group
- Crustaceans
Abludomelita obtusata
- Peak month
- July
- Records since 2000
- 2,298
- Group
- Crustaceans
Gnathia oxyuraea
- Peak month
- July
- Records since 2000
- 2,291
- Group
- Crustaceans
Montagu's Crab
- Peak month
- September
- Records since 2000
- 2,259
- Scientific name
- Xantho hydrophilus
Great Spider Crab
- Peak month
- September
- Records since 2000
- 2,252
- Scientific name
- Hyas araneus
Gammaropsis maculata
- Peak month
- August
- Records since 2000
- 2,202
- Group
- Crustaceans
Circular crab
- Peak month
- August
- Records since 2000
- 2,199
- Scientific name
- Atelecyclus rotundatus
Cheirocratus sundevallii
- Peak month
- August
- Records since 2000
- 2,128
- Group
- Crustaceans
Urothoe marina
- Peak month
- August
- Records since 2000
- 2,097
- Group
- Crustaceans
Leach's squat lobster
- Peak month
- September
- Records since 2000
- 2,080
- Scientific name
- Galathea squamifera
Demon Shrimp
- Peak month
- October
- Records since 2000
- 2,066
- Scientific name
- Dikerogammarus haemobaphes
Gastrosaccus spinifer
- Peak month
- July
- Records since 2000
- 2,031
- Group
- Crustaceans
Mud shrimp
- Peak month
- June
- Records since 2000
- 2,001
- Scientific name
- Corophium volutator
Candacia armata
- Peak month
- October
- Records since 2000
- 1,985
- Group
- Crustaceans
Harpinia crenulata
- Peak month
- May
- Records since 2000
- 1,926
- Group
- Crustaceans
Metaphoxus fultoni
- Peak month
- May
- Records since 2000
- 1,868
- Group
- Crustaceans
Diastylis bradyi
- Peak month
- July
- Records since 2000
- 1,839
- Group
- Crustaceans
Bristly Crab
- Peak month
- September
- Records since 2000
- 1,825
- Scientific name
- Pilumnus hirtellus
Leucothoe incisa
- Peak month
- June
- Records since 2000
- 1,763
- Group
- Crustaceans
Scorpion Spider Crab
- Peak month
- September
- Records since 2000
- 1,747
- Scientific name
- Inachus dorsettensis
Burrowing mud shrimp
- Peak month
- June
- Records since 2000
- 1,727
- Scientific name
- Callianassa subterranea
Long-legged Spider Crab
- Peak month
- August
- Records since 2000
- 1,693
- Scientific name
- Macropodia rostrata
Stenothoe marina
- Peak month
- July
- Records since 2000
- 1,682
- Group
- Crustaceans
Hippomedon denticulatus
- Peak month
- August
- Records since 2000
- 1,665
- Group
- Crustaceans
Volcano Barnacle
- Peak month
- September
- Records since 2000
- 1,653
- Scientific name
- Perforatus perforatus
Broad-clawed Porcelain Crab
- Peak month
- August
- Records since 2000
- 1,619
- Scientific name
- Porcellana platycheles
Diastylis laevis
- Peak month
- June
- Records since 2000
- 1,593
- Group
- Crustaceans
Harpinia pectinata
- Peak month
- June
- Records since 2000
- 1,577
- Group
- Crustaceans
Centropages hamatus
- Peak month
- July
- Records since 2000
- 1,572
- Group
- Crustaceans
Crassicorophium crassicorne
- Peak month
- March
- Records since 2000
- 1,561
- Group
- Crustaceans
Common Sea Slater
- Peak month
- August
- Records since 2000
- 1,560
- Scientific name
- Ligia oceanica
Megaluropus agilis
- Peak month
- July
- Records since 2000
- 1,556
- Group
- Crustaceans
Bathyporeia tenuipes
- Peak month
- April
- Records since 2000
- 1,536
- Group
- Crustaceans