Seaweed; marine algae such as kombu, wakame, nori, many of which are edible.
味噌汁に海藻を入れると栄養が増す。
Adding seaweed to miso soup increases its nutritional value.
浜辺で色々な海藻を見つけた。
I found various kinds of seaweed on the beach.
海藻サラダはヘルシーな副菜として人気がある。
Seaweed salad is popular as a healthy side dish.