The reef we love is also the reef we are slowly damaging by being here. The good news: most of the damage is preventable, and a handful of small choices, repeated by every diver, would change everything.

The reef does not want you to touch it.

A single touch can leave behind oil, bacteria, or a bruise the coral will spend a year repairing. Hands away from the reef. Fins clear of the bottom. If you need to stabilise, find dead rock.

Sunscreen is the silent killer.

Oxybenzone, octinoxate, octocrylene — banned in Hawaii, banned in Palau, still legal almost everywhere else. They cause coral bleaching at concentrations measured in parts per trillion. Mineral zinc oxide is the only safe option. Read the label.

The plastic that gets onto the reef

Most of it doesn't come from divers. It comes from the boats, the resorts, the supply chain that brought you here. We carry mesh bags on every dive. We come up with whatever we find. You can do the same.

The animals you should never feed

Sharks, rays, eels, fish — any of them. Feeding changes behaviour, draws aggression, and ends with bites that get the animal blamed for being wild. The best dive is the one where the animals don't know you exist.

What we are doing

We donate one dive in twenty to coral reformation work. We refuse charters that ask us to feed sharks. We write trip reports for the marine ministry on bleaching events we observe. None of it is heroic. All of it is necessary.

RD