Marine Snow: The Ocean’s Silent Climate Guardian

Marine snow — the gentle, continuous fall of organic particles from the upper ocean, is one of the most powerful yet overlooked forces shaping Earth’s climate.

Made up of tiny fragments of dead organisms, plankton, and organic debris, this natural “snowfall” carries carbon from the surface to the deep sea. Once it sinks, that carbon can remain stored for centuries, making marine snow a vital part of the planet’s natural carbon‑sequestration system.

Despite its delicate appearance, marine snow fuels the biological carbon pump, supports deep‑sea ecosystems, and helps regulate global climate stability. Protecting the ocean processes that sustain it is essential for a resilient and healthy marine environment.

AFMESI continues to advance research, advocacy, and community engagement that safeguard the ocean systems responsible for climate balance and biodiversity.