Krill

Krill are tiny shrimp-like creatures that live in the cold waters of the ocean. They are an important part of the ocean food chain, as they are a primary food source for much larger animals like whales, seals, penguins, and fish.

Krill are so small that you might need a microscope to see them properly. They are usually about the size of your pinky finger nail. Krill have a hard outer shell which protects their bodies, and they use small legs to swim around in the water.

Krill can be found in massive swarms in the ocean, sometimes containing billions of individuals. This is because krill like to stick together in groups for protection and to find food more easily.

Humans have also found krill to be a useful resource, as they are rich in omega-3 fatty acids, which are good for our health. Krill oil, made from extracting the oil from krill, is used in many dietary supplements.

In conclusion, krill are tiny shrimp-like creatures that are an important part of the ocean food chain. They live in big groups and are eaten by many large animals. Humans also use them for their nutritional benefits.