All you need: Cardboard and seaweed

Sometimes when we go to the beach we find seaweed on the shore, you just need to bring one of them home, place it on a flat place, stretch it very well and let it dry to later stick it to the cardboard. They are a beautiful option to decorate the walls and you can also put on the cardboard the scientific name of the seaweed and the beach where you found it. You do not need to use any type of glue, since seaweed is naturally sticky.