The blue whale is at the top of the marine food chain. As the largest animal on Earth, it primarily feeds on krill, which are tiny shrimp-like creatures. Despite its massive size, the blue whale is a filter feeder, meaning it consumes large quantities of krill by filtering them through its baleen plates.
Since the blue whale has no natural predators, it occupies the highest trophic level in the ocean ecosystem. Its position at the top of the food chain makes it a key species in maintaining the balance of marine life. By controlling krill populations, blue whales help ensure the health and stability of the oceanic food web.