Snorkelling the Pacific Reefs: A Practical Guide for Travellers

Snorkelling is the simplest way for almost any traveller to enter the underwater world of the Pacific. It needs no certification, very little equipment and only modest swimming ability — a mask, a snorkel, a pair of fins and the confidence to float face-down are enough to bring a coral reef into full view.

The honest guidance is that snorkelling rewards a little preparation. Knowing how to clear a mask, how to read a current, how to breathe slowly and how to behave around coral turns a brief novelty into something you can do for an hour at a time, in comfort, anywhere from a Fijian lagoon to the reefs of French Polynesia. This guide covers the essentials.

The kit, and getting it right

Three pieces of equipment matter, and the most important is the mask. A mask that fits will seal against your face with gentle suction when you breathe in through your nose, without the strap. A leaking mask ruins a snorkel, so it is worth testing fit carefully. To stop the lens fogging, a smear of defog solution, baby shampoo or even saliva, rinsed lightly, works well.

Fins should be snug but not tight; they make swimming efficient and let you hold position against light current. A snorkel with a splash guard helps in choppier water. Many travellers also like a thin rash vest or wetsuit top — not for warmth so much as sun protection, since a back exposed at the surface burns fast and invisibly. Operators on a guided journey will supply and fit equipment, but knowing what good fit feels like is useful anywhere.

Technique: breathing, clearing, floating

Good snorkelling is mostly about staying calm and relaxed. Breathe slowly and deeply through the snorkel; quick, shallow breathing wastes air and raises anxiety. Let your body float — a relaxed snorkeller lies almost flat at the surface with very little effort, using slow fin kicks from the hip rather than thrashing from the knee.

Two skills give real confidence. To clear water from a mask, press the top of the frame to your forehead, look slightly up, and exhale through your nose; the water is pushed out the bottom. To clear a snorkel, give one sharp exhale to blow the water out the top, or out the purge valve if your snorkel has one. Practising both in shallow, calm water before the first proper reef pays off immediately.

Reading the water and staying safe

The sea, even a calm-looking lagoon, deserves respect. Always snorkel with at least one other person and, on a guided trip, within the area the guide indicates. Be aware of current: if you find yourself working hard to stay in place, you are likely in a flow, and the rule is not to fight it head-on but to swim across it toward shallower water or a boat.

Note the entry and exit points before you get in, watch for boat traffic and stay clear of channels, and come out before you are tired rather than after. Sun, mild dehydration and the effort of swimming add up quietly. None of this is cause for nervousness — it is simply the ordinary seamanship that makes snorkelling the safe, repeatable pleasure it should be.

What you will actually see

A healthy reef is busy. Expect branching, plate and brain corals in browns, greens and purples; clouds of small reef fish — damsels, wrasses, fusiliers; parrotfish audibly scraping algae from the rock; perhaps a turtle grazing, a reef shark patrolling at a polite distance, or a ray gliding over sand. Coral itself is an animal, a colony of tiny polyps, and the reef is a single vast living structure.

Reefs are best in good light, so late morning to early afternoon, with the sun high, gives the truest colour. The richest life is often right at the reef edge, where the shallow flat drops away. Move slowly and quietly: fish that flee from a fast, splashing swimmer will often carry on feeding around a still, patient one.

Leaving the reef unharmed

Coral is fragile and slow-growing — a touch can damage years of growth, and standing on it kills it outright. The cardinal rule of reef snorkelling is to touch nothing: not coral, not shells, not animals. Maintain good buoyancy and keep fins clear of the reef; in shallow water, never stand up on coral, and if you must rest, float or reach sandy bottom.

Choose mineral, reef-safe sunscreen, or better still rely on a rash vest and hat, since some chemical sunscreen ingredients harm coral. Do not feed fish, do not chase or corner wildlife, and take nothing home but photographs. On The Pacific Arc journey, reef visits are run with these principles built in — because the reefs of the Pacific are extraordinary precisely where travellers have trodden lightly.