It is very important to follow some basic rules when snorkeling or scuba diving in these waters. We could summarize all the norms in two: do not touch and do not take away anything!
The Red Sea is Egypt's main treasury, in my opinion it is much worthier than the ancient Egypt's ruins. For this reason it is very important that all visitors contribute to preserve it as it is. Almost all the coast of the Egypt's Red Sea is currently protected. Some illegal actions can have very negative consequences (for the environment and for the diver). It is absolutely forbidden to touch anything (not even the stones). It is also forbidden to feed the fishes. Of course fishing is an illegal activity also. Gloves are illegal in some areas, and should be avoided. Divers must be very careful no to touch the bottom of the sea with the fins; corals are delicate creatures and even a small cloud of sand can be lethal.
It is also very important not to take away anything from the beaches. Bags are checked in the area airports, so if you have a temptation you better think it twice. If all visitors follow these simple rules, we will be able to enjoy this magic seascape for many more years.