Sperm Whale

Another reason to defend marine mammals! Australian biologists have
estimated that each sperm whale in the southern oceans defecates 50
tons of iron into the sea every year, providing minerals needed by
phytoplankton, the tiny creatures that live near the surface and
gobble up carbon dioxide. Add the “tail-end emissions” from all 12,000
sperm whales, and you get the equivalent of taking 40,000 cars off the
road. That’s why we think you should support protection for our
sea-going whale allies!

Source: Agence France Presse, Faecal attraction: Whale poop fights climate change