Figure 6. Whisker δ¹³C and δ¹⁵N values of juvenile southern elephant seals from Macquarie Island.

Stable carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope values from a randomly selected 2 mm section of whisker from (A) sub-yearling (n = 7; colour coded by foraging locations (IFZs) presented in Fig. 4), (B) one year (n = 35; light grey symbols), (C) two year (n = 40; dark grey symbols) and (D) three year old (n = 27; black symbols) age classes of elephant seals from Macquarie Island ([75], this study). Also shown are marginal frequency distributions for the δ¹³C and δ¹⁵N values for each age class.