The food chain
Some people think that when they eat fish, it was born in a can or some other thing, like people think that salmon was born smoked. This is a completely wrong idea because fish live in the SEA, not the can. This is a youtube video that tells you how phytoplankton get eaten by zooplankton, which is then enjoyed by krill. Later they get eaten by fish, whales, and, penguins. It isn't very good, but it's the best I found.