Figure 3.

For hawksbill (n = 22, brown circles) and green (n = 26, green circles) turtles migrating from Diego Garcia to remote oceanic islands and submerged banks, the straightness index of migration routes versus the direct distance to the target. Shorter migrations tended to have lower straightness index values. For example, when the beeline distance to the target was less than 200 km versus greater than 200 km, the mean straightness index values were 0.55 and 0.77, respectively. When the beeline to the target was less than 200 km, there was no significant difference between the straightness index of green versus hawksbill turtles (t₁₀ = 0.52, p > 0.05).