Bookworm11
Contributor
You are not allowed to carry dive knives in the Cozumel Marine Park unless you are a professional diver. Just saying. I'm not taking a stance on this, I'm just reporting the regulation. And as an aside, I found a dive knife in its leather sheath at the bottom at a dive in Koh Tao. The DM said he was going to sharpen it back up and keep it.