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Whale Pump

How Whales Help Cool the Planet: Nature’s Climate Engineers

How Whales Help Cool the Planet: Nature’s Climate Engineers

When we think of natural solutions to climate change, forests and plants often come to mind. But in the vast blue depths of our oceans,...

Whales also fertilize the ocean through what's called the "whale pump." As whales feed at depth and return to the surface to breathe, they release nutrient-rich waste containing iron and nitrogen. These nutrients are critical for the growth of phytoplankton—microscopic algae that absorb vast amounts of CO₂ during photosynthesis. Phytoplankton account for roughly 40% of global carbon uptake, fixing more carbon annually than all the world's forests combined. By enhancing phytoplankton growth, whales create a multiplier effect in carbon sequestration. Even a 1% increase in phytoplankton productivity due to recovering whale populations could sequester as much CO₂ as 2 billion mature trees each year.
Whales also fertilize the ocean through what's called the "whale pump." As whales feed at depth and return to the surface to breathe, they release nutrient-rich waste containing iron and nitrogen. These nutrients are critical for the growth of phytoplankton—microscopic algae that absorb vast amounts of CO₂ during photosynthesis. Phytoplankton account for roughly 40% of global carbon uptake, fixing more carbon annually than all the world's forests combined. By enhancing phytoplankton growth, whales create a multiplier effect in carbon sequestration. Even a 1% increase in phytoplankton productivity due to recovering whale populations could sequester as much CO₂ as 2 billion mature trees each year.

How Whales Help Cool the Planet: Nature’s Climate Engineers

When we think of natural solutions to climate change, forests and plants often come to mind. But in the vast blue depths of our oceans,...

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