christn: diving structor raymundo rirez is we aware of that relationship.he conservation authorities know he's sticking to the rules, because he has to renew his tour guide license every year. -- two years. raymundo: el cielo nowadays is one of the most popular places in cozumel, because the water is turquoise, beautiful blue, only one and a half meters deep. and it's full of starfish. and usually the people arrive in this place and take the starfish out of the water, take the selfie, and put it back. maybe the starfish is going to be dead the next day. that is the lack of education. you cannot touch anything. christian: this ignorance is uptting to raymundo. at's whye only takes sll groups down at a time and gives them strict instructions. raymundo: if you don't control your buoyancy while diving, and you get close to the reef, you're going to hit the reef -- maybe with your nds, but mbe withhe tank. d if y hit theoral foation orhe spong or something with your tank, it's going to be a big damage. christia they willreak off most tourists from the ships spen