Whale poop is vital to the flow of the nutrient cycle in the ocean. 

According to National Geographic, Scientists are finding that whales eat three times more than they previously thought. Whales typically feed hundreds of feet deep in the ocean. How much whales eat is not the direct goal of the discovery. Scientists are also interested in how much these whales are defecating, because of the importance of whale feces in the productivity of the ocean. 

Matthew Savoca, a National Geographic explorer, has set out to find the answer that he desires. Baleen whales were chosen for this research. Baleen whales mostly eat krill and zooplankton found in the Atlantic, Pacific, and Southern Oceans. The results of this research show that the average blue whale eats 16 tons of food every day.  

This discovery also led to the finding that baleen whales play a much more important role in the ecosystem. There are fourteen known baleen whale species and they are all crucial to the moving nutrients through the ocean.

https://www.nationalgeographic.com/animals/article/whales-eat-three-times-more-than-thought