The plankton bloom of the Great Feast in Alaskas coastal waters attracts humpback whales and sea lions, who face the dangers of killer whales.

• 阿拉斯加海岸大量的浮游生物吸引了一批批的驼背鲸和海狮；冒着被虎鲸猎杀的危险来赴此盛宴...