Part 5/9:
Among the Pacific's inhabitants, some, like the chambered nautilus and horseshoe crab, remind us of life forms that have withstood the test of time—surviving five mass extinctions throughout Earth's history. The nautilus, with its unique ability to control buoyancy, dives into the depths for refuge, while the horseshoe crab, equipped with an array of eyes for superior navigation, finds itself vulnerable to industrialization and habitat destruction.