14-day-old grey seal pup, Ghaoidmeal, Inner Hebrides
20. Grey seal pup in typical early moult, Scroby Sands, Norfolk (J. Woolston)
Grey seal bull moulter, Ramsey Island
21. Two grey seal bulls contesting territory, North Rona
Grey seals in copulation, Farne Islands (J. C. Coulson)
22. Branded grey seal cow, Farne Islands (J. C. Coulson)
Grey seals hauled-out on West Hoyle Bank, Cheshire (J. C Gittins)
23. Common seal cow and pup, the Wash (W. N. Bonner)
Two common seals (heads), the Wash (W. N. Bonner)
24. Common seals hauled-out on sandbank, the Wash (W. Vaughan)
Common seal bull ‘salmon-leaping’, Mousa, Shetland
1. External features of seal and sea-lion
2. Limb-bones of seal and fur-seal
3. Skulls of seals (grey and common) and of sea-lion
4. Side view of pinnipede body
5. Bradycardia in seal, porpoise and manatee
6. Kidneys and posterior vena cava in seals
7. World distribution of the grey seal
8. The origin of the three populations of grey seals
9. Distribution of grey seals in British waters – recorded sightings
10. Distribution of grey seals in British waters – breeding areas
11. External differences between grey and common seals and between bull and cow grey seals
12. Jaws and teeth in grey and common seals
13. Growth and maturation of the os penis
15. Distribution by age of cow and bull grey seals
16. The male genitalia of the grey seal
17. Growth and maturation of the testis in the grey seal
18. Variations during the year in adult testicular weights in the grey seal
19. The female genitalia of the grey seal (adult)
20. The female genitalia of the grey seal at birth
21. Foetal growth rate in the grey seal
22. Counts of grey seals on West Hoyle Bank and on the Farne Islands
23. Counts of grey seals on West Hoyle Bank, 1951–56 and 1966–70
24. Early stages in territory formation on Shillay
25. Daily pupping rates for Ramsey Island, North Rona, Staple Island and Brownsman
26. Daily pupping rates in neighbouring rookeries
27. Breeding sites on Ramsey Island
28. Breeding sites on Eilean nan Ron and Ghaoidmeal
30. Breeding sites on North Rona
32. Breeding sites on the Farne Islands
33. Different types of social arrangements in different groups of grey seals
34. The grey seal pup in the first four weeks
35. Bull territories on Shillay
36. Types of marker used on grey seal pups
37. Recoveries of young marked grey seals
38. Growth rates in grey seal pups
39. World distribution of common seals
40. Distribution of common seals in British waters – recorded sightings
