Responsible diving depends on control, distance and preparation. A diver who maintains buoyancy, secures equipment and follows local rules is less likely to damage coral, disturb animals or leave waste behind.
These ten practices apply to scuba divers and, with suitable adjustments, snorkellers. Safety and training requirements always come first.
1. Master buoyancy before fragile sites
Practise weighting, trim, hovering and fin control in a forgiving environment before entering a coral garden, cave entrance or silty habitat. Stay far enough above the bottom that an unexpected breath or fin movement will not cause contact.
2. Keep hands, fins and knees off the reef
Coral is living tissue, and even a brief brush can cause damage. NOAA’s responsible-diving guidance advises avoiding all reef contact, including with hands, fins and equipment.
3. Do not touch, chase, feed or ride wildlife
Approaching too closely can interrupt feeding, resting, cleaning, breeding or migration. NOAA’s ocean-etiquette guidance says never to touch, handle or ride marine wildlife and notes that contact may injure the animal, endanger the visitor or be illegal.
4. Secure gauges, cameras and alternate regulators
Nothing should trail across coral or drag through sediment. Clip hoses and accessories close to the body without blocking access in an emergency. Practise using a camera while maintaining depth and situational awareness before taking it into a sensitive site.
5. Use low-impact finning
A frog kick or modified flutter kick can reduce downward wash where training and conditions permit. Slow down near the bottom and avoid stirring sediment, which can smother organisms and reduce visibility for other divers.
6. Follow site, species and distance rules
Marine parks can set no-entry zones, approach distances, mooring requirements, fishing restrictions and seasonal closures. Listen to the local briefing and follow the most protective applicable rule, even if another destination allowed different behaviour.
7. Choose responsible operators
Ask how the operator manages mooring, waste, wildlife encounters, group size and poorly controlled divers. Green Fins uses a 15-point environmental code for marine tourism operations covering practices above and below water.
| Ask the operator | A useful answer includes |
|---|---|
| How do you prevent anchor damage? | Permanent moorings or site-specific no-anchor procedures |
| How large are groups? | Ratios suited to skill, conditions and site sensitivity |
| What happens if a diver touches coral? | Briefing, intervention and skills support |
| Do you feed wildlife? | No feeding or staged handling |
| How is waste managed? | Refill systems, secure bins and nothing discarded overboard |
8. Leave shells, coral and animals where they are
Dead coral and empty-looking shells still provide habitat and contribute material to the ecosystem. Do not collect souvenirs or buy products made from protected species, coral, shells or wildlife parts.
9. Prevent litter and lost gear
Bring reusable water containers, secure loose items on the boat and retrieve waste only when doing so is safe. Do not turn an unplanned cleanup into an entanglement, overhead-environment or decompression risk. Report large debris, nets or hazardous material to the operator or relevant authority.
10. Report damage and useful observations
Tell the operator about damaged moorings, injured wildlife, ghost gear, pollution and unsafe conduct. Participate in an established monitoring or cleanup programme when trained to do so. Photographs should document the issue without encouraging closer contact.
Our green travel guide covers transport, accommodation and local spending beyond the dive itself. For an example of how marine structures can change over time, see our article on artificial reefs.
Bottom line
The most useful conservation skills underwater are excellent control and restraint. Maintain buoyancy, keep equipment close, give wildlife space, follow local rules and choose operators that actively reduce their environmental impact.
