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Hawaii Wilderness Safety

Staying warm, dry, and well-hydrated is key to a happy and safe experience in Hawaii’s wilderness. For any hike, prepare yourself for an emergency by packing a first-aid kit, a reflector, a whistle, high-energy food, and extra water. The sun can be brutal, so take a hat, sunscreen, and sunglasses on any trip.

Check weather forecasts often and pay attention to the sky when hiking, as weather patterns can change suddenly. Always notify someone—a friend, your hostel, a park ranger, or a local hiking organization—about your whereabouts. Know your limits and do not attempt a hike beyond your ability.

For beach outings, pay attention to all posted signs and notices; be aware of areas with frequent riptides and dangerous surf. As is the case with hiking, make sure someone knows you’re going in the water before you dive in.


  • Dangerous Wildlife
  • Box Jellyfish. Transparent box jellyfish swarm to Hawaii’s leeward shores a week or so after the full moon. A jellyfish can measure 1-3 in. with tentacles of up to 2 ft. long. Its painful sting can ...more

  • Environmental Hazards
  • Heat Exhaustion And Dehydration. Heat exhaustion leads to nausea, excessive thirst, headaches, and dizziness. Avoid this condition by drinking plenty of fluids, eating salty foods (e.g., crackers) ...more

  • Natural Disasters
  • Earthquakes. Seismic activity on Hawaii is frequent due to its active volcanoes. The vast majority of earthquakes are too small to be felt, but about once a decade a stronger quake can cause real damage ...more



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