krill

Krill are small, shrimp-like marine creatures found in oceans worldwide. They are a vital part of the aquatic food chain, serving as a primary food source for many larger animals like whales, seals, and fish. Krill feed mainly on phytoplankton, tiny plant-like organisms in the water, and in turn, they are heavily preyed upon, making them crucial for maintaining healthy ocean ecosystems. They also play a role in the carbon cycle by transporting carbon from surface waters to deeper layers when they die or excrete waste. Despite their small size, krill are one of the most abundant and important species in the world's oceans.