Final Answer:
Two-thirds of the world's fur seal population goes to breed on the subantarctic islands every year.
Step-by-step explanation:
The breeding grounds for fur seals, comprising approximately two-thirds of the global population, are situated on subantarctic islands. These islands provide a suitable environment for fur seals to carry out their breeding activities, ensuring their survival and reproduction.
The choice of subantarctic islands as breeding grounds is influenced by various factors, including the availability of suitable habitats, protection from predators, and access to abundant food sources in the surrounding waters. These islands offer a conducive ecosystem for the fur seals, allowing them to give birth and nurture their young in a relatively safe and resource-rich environment.
This annual migration and breeding behavior on subantarctic islands play a crucial role in the life cycle and population dynamics of fur seals. It reflects the adaptability of these marine mammals to specific environmental conditions that support their reproductive success and overall well-being.
In conclusion, two-thirds of the world's fur seal population selects subantarctic islands as their breeding grounds, demonstrating the significance of these unique ecosystems in sustaining the global fur seal population.