The quick reality
PNG's biodiversity is genuinely world-class — birds of paradise, reefs, rainforest, rivers and marine life.
The routine health precautions are the tropical ones: mosquitoes, sun, heat, water and minor cuts in a humid climate.
Dangerous wildlife encounters are not the main risk to visitors; preparation and hygiene matter more.
What you should know
Tropical precautions
- Mosquito-borne illness is a real consideration — get medical advice before travel and use repellent, long sleeves and nets.
- Heat and humidity dehydrate you faster than you expect.
- Cuts and coral grazes infect quickly — clean and dress them immediately.
- Strong sun, including on overcast days and in the water.
In the water and bush
- Crocodiles are present in some river, estuary and coastal areas — follow local advice absolutely.
- Currents, tides and surge matter on reefs and coastlines; dive and snorkel with local operators.
- Wear footwear and watch where you put hands and feet in the bush.
Protecting the environment
- Do not touch or stand on coral, and take nothing from reefs or sites.
- Waste management is limited in many places — carry your rubbish out.
- Buy responsibly; avoid products made from protected species.
What this means for a traveller
- The nature is a reason to come. The precautions are simple and mostly about preparation.
- In remote areas a minor infection becomes a bigger problem, so treat small injuries seriously.
What I recommend
- See a travel doctor before you come and follow their malaria and vaccination advice.
- Pack repellent, sun protection, antiseptic, dressings and rehydration salts.
- Snorkel, dive and swim only where locals tell you it is fine.
Verify before you travel
Confirm current vaccination and malaria advice with a qualified travel health professional before departure.
Last reviewed: September 2026