24 ฤดูกาล
244 ตอน
Oregon Field Guide - Season 21 Episode 12
A one time dead zone off Oregon’s coast turns out not to be an isolated incident. Oxygen levels are plummeting every summer now. Scientists deploy an army of sensors, including a diving robot explorer, to learn what’s changed in our ocean. For the last 40 years salmon and steelhead have been missing from a place called Whychus creek. But they’re about to come back, and ecologists are getting busy with bulldozers as they prepare for their return. A trip to the Oregon Coast Aquarium for a look at what it takes staff and volunteers to care for thousands of animals.
- ปี: 2021
- ประเทศ: United States of America
- ประเภท: Documentary
- สตูดิโอ: PBS
- คำสำคัญ:
- ผู้อำนวยการ: Steve Amen
- นักแสดง: Steve Amen
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