I see your point. But most national parks forbid taking natural items such as rocks, shells, etc. If everyone takes an item from the park there's no park left

I see your point. But most national parks forbid taking natural items such as rocks, shells, etc. If everyone takes an item from the park there's no park left for future generations anyways. Kelp forest or no kelp forest ... https://www.vcstar.com/story/news/local/2018/02/03/eco-tip-californias-beaches-arent-there-taking/302733002/ https://www.vcstar.com/story/news/local/2018/02/03/eco-tip-c...