Whales and the Carbon Cycle

Whales play a crucial role in the carbon cycle through their carbon storage and nutrient fertilization. As the largest animals on Earth, whales store a significant amount of carbon in their bodies throughout their long lifespans, and when they die, their carcasses sink to the sea floor, sequestering carbon for over a century. Additionally, whales contribute to the carbon cycle indirectly through the nutrient-rich fecal blooms they produce, which stimulate phytoplankton growth, leading to carbon capture and sequestration. While the total carbon value of whales is relatively small, the potential for their carbon benefits is significant, especially if whale populations recover from past exploitation. Protecting and conserving whales is crucial for maintaining healthy oceans and mitigating climate change.