What is 'nori' and how is it used in ramen?

Nori is a type of edible seaweed that is often used as a topping for ramen. It's made by shredding and drying seaweed, and then pressing it into thin sheets. Nori has a salty and slightly sweet flavor, and it adds a nice crispy texture to the ramen. It's often served on the side of the bowl, so that it doesn't get soggy in the broth. To eat it, you can either dip it in the broth or use it to pick up the noodles.