Fig 4.

Relationship between relative mass of Antarctic fur seal pups at weaning (calculated as deviation from sex-specific average pup mass at weaning) and time mothers spent diving during their foraging trip at sea in h (graph A, p = 0.0067, R² = 0.36, slope = 0.046 ± 0.015, n = 19), and energy gain per min spent diving (Graph B, p = 0.0050, R² = 0.49, slope = 0.026 ± 0.007, n = 14). Time at sea was also linked to pup mass at weaning (p = 0.0166, R² = 0.28).