Oxygen for life: The biological impacts of low dissolved oxygen
About the series
Scientists are reporting a decline in oxygen-rich waters throughout the world, raising concerns for sea life. In parts of Puget Sound, low oxygen levels can occur naturally but may be worsened by human-caused pollution. In this five-part series, Christopher Dunagan reports on the critical nature of oxygen to Puget Sound species. Scientists are finding that changes in oxygen levels can lead to physiological adjustments, shifts in predator-prey relationships and other repercussions throughout the food web. Read the latest story.