Who consumes kelp?

I'm curious to know, who exactly consumes kelp? Is it primarily humans, or do other animals also enjoy this seaweed? If humans consume it, what are the common ways it's used in cuisine? Are there any specific cultures or regions that particularly favor kelp? And, do animals in the wild consume kelp naturally, or is it primarily a human food source? I'm quite fascinated by this sea vegetable and would love to learn more about its consumption habits.