Collins New Naturalist Library

14. Moulting haul-out at Aber Foel Fawr, Ramsey Island (#litres_trial_promo)

Closer view of the moulting haul-out at Aber Foel Fawr (K. M. Backhouse) (#litres_trial_promo)

15. Two types of moulting grey seal pups, Ramsey Island (#litres_trial_promo)

16. Newly-landed grey seal bull, shell-sand beach, Shillay (#litres_trial_promo)

Grey seal cow giving birth, Farne Islands (W. N. Bonner) (#litres_trial_promo)

17. Newly-born grey seal pup, Ramsey Island (#litres_trial_promo)

Grey seal pup with erupting teeth, Ramsey Island (#litres_trial_promo)

18. Grey seal cow identifying her pup by smell, Ramsey Island (#litres_trial_promo)

Grey seal cow attacking pup not her own, Shillay (#litres_trial_promo)

19. Grey seal pup suckling, Farne Islands (#litres_trial_promo)

14-day-old grey seal pup, Ghaoidmeal, Inner Hebrides (#litres_trial_promo)

20. Grey seal pup in typical early moult, Scroby Sands, Norfolk (J. Woolston) (#litres_trial_promo)

Grey seal bull moulter, Ramsey Island (#litres_trial_promo)

21. Two grey seal bulls contesting territory, North Rona (#litres_trial_promo)

Grey seals in copulation, Farne Islands (J. C. Coulson) (#litres_trial_promo)

22. Branded grey seal cow, Farne Islands (J. C. Coulson) (#litres_trial_promo)

Grey seals hauled-out on West Hoyle Bank, Cheshire (J. C Gittins) (#litres_trial_promo)

23. Common seal cow and pup, the Wash (W. N. Bonner) (#litres_trial_promo)

Two common seals (heads), the Wash (W. N. Bonner) (#litres_trial_promo)

24. Common seals hauled-out on sandbank, the Wash (W. Vaughan) (#litres_trial_promo)

Common seal bull ‘salmon-leaping’, Mousa, Shetland (#litres_trial_promo)

FIGURES (#ulink_67d5bedc-f5dd-5ac2-98e9-ecef19448708)

1. External features of seal and sea-lion (#ulink_5eddff4e-b332-5f45-b048-e5a158a547b8)

2. Limb-bones of seal and fur-seal (#ulink_9d5b1dd9-9054-5a58-9321-c8490975ac70)

3. Skulls of seals (grey and common) and of sea-lion (#ulink_78499ad0-1f06-5aae-9620-ad39aa7013a2)

4. Side view of pinnipede body (#ulink_88773492-2ac3-54d4-b3c1-d534ba61ac44)

5. Bradycardia in seal, porpoise and manatee (#ulink_0608d78a-c940-5bb9-8027-aa681c9e2953)

6. Kidneys and posterior vena cava in seals (#ulink_51785113-9149-5b5f-a670-3e44cca514a6)

7. World distribution of the grey seal (#ulink_e4f4a5c1-b71e-53ea-b33b-a94603b00bde)

8. The origin of the three populations of grey seals (#ulink_109864a9-7451-5232-9663-9955bca7a3aa)

9. Distribution of grey seals in British waters – recorded sightings (#ulink_8113edc1-2885-5ecd-8a32-cf4c6197e586)

10. Distribution of grey seals in British waters – breeding areas (#ulink_013a188a-1fc0-56fd-b4f3-137c299fba14)

11. External differences between grey and common seals and between bull and cow grey seals (#ulink_18dd6e49-bea7-5a3a-b718-1c14a5def608)

12. Jaws and teeth in grey and common seals (#ulink_4910a6c1-6dd0-5ba3-a295-b28759bfb95d)

13. Growth and maturation of the os penis (#litres_trial_promo)

14. The os penis index (#litres_trial_promo)

15. Distribution by age of cow and bull grey seals (#litres_trial_promo)

16. The male genitalia of the grey seal (#litres_trial_promo)

17. Growth and maturation of the testis in the grey seal (#litres_trial_promo)

18. Variations during the year in adult testicular weights in the grey seal (#litres_trial_promo)

19. The female genitalia of the grey seal (adult) (#litres_trial_promo)

20. The female genitalia of the grey seal at birth (#litres_trial_promo)

21. Foetal growth rate in the grey seal (#litres_trial_promo)

22. Counts of grey seals on West Hoyle Bank and on the Farne Islands (#litres_trial_promo)

23. Counts of grey seals on West Hoyle Bank, 1951–56 and 1966–70 (#litres_trial_promo)

24. Early stages in territory formation on Shillay (#litres_trial_promo)

25. Daily pupping rates for Ramsey Island, North Rona, Staple Island and Brownsman (#litres_trial_promo)

26. Daily pupping rates in neighbouring rookeries (#litres_trial_promo)

27. Breeding sites on Ramsey Island (#litres_trial_promo)

28. Breeding sites on Eilean nan Ron and Ghaoidmeal (#litres_trial_promo)