Sandy bottom does not equate to lifeless! Take a good look if you have the opportunity in your next dive. And you might be surprised. The black sandy bottom in Lembeh seems devoid of life to the untrained/casual eyes.
Every diver/person is responsible to his/her action but some of them are beyond hope!
Yes I understand that a sandy bottom does not mean devoid of life....but when was the last time you walked through the grass in your backyard with any notion of concern for where and what you were stepping on. In the water its a big deal but out of the water its not a consideration? Where is the line drawn?
-Z