Everybody wants to have a fruitful, safe vacation in Hawai'i. Traveling safely here not only means preserving one's own safety, but also preserving the health and safety of Hawai'i's residents, environment, and wildlife - simply because it's the right thing to do.
Visitors should maintain vigilance when engaging in the following activities in Hawai'i:
Hiking
Hikers should stay on designated trails, be sure not to enter areas marked off-limits, and not hike beyond their ability. The state spends significant money and resources each year rescuing hikers who are stuck or injured, and visitors who wish to hike should stick to trails that match their experience.
Visitors should also take local cues when hiking - if a local resident says an area is off-limits or private, turn around or choose another (clearly marked) path.
Swimming
Visitors should take care when swimming in areas without lifeguards, and should pay attention to the condition warning flags posted along many beaches. The Pacific often appears calmer than it really is, and strong surf, currents and undertows can sweep inexperienced swimmers out to sea.
Many areas in Hawai'i will also appear in guidebooks and on social media as being places to swim, but are in fact dangerous. In these cases, rely on posted signage rather than word of mouth or internet reviews, which often leave out important context.
Wildlife Viewing
Much of Hawai'i's ocean life is protected by federal and state law; many species have minimum distances for safe viewing. Visitors wishing to view wildlife should not attempt to feed or interact with wildlife, and maintain adequate distance so that the animal would proceed as though humans are not present.
The fines can be steep for violators, and ignorance of the law isn't an excuse.
There has also been an increase in road accidents between motorists and the nenegoose, a near-threatened endemic bird that is also the state bird of Hawai'i. These docile birds are often found on roadways and don't react quickly to oncoming traffic, so drive with caution.
Visiting Cultural Sites
A common cultural site in Hawai'i is heiau, or temples built by pre-contact Native Hawaiians. When visiting these sites or other ruins, it's important not to touch or climb on the rocks and structures. Visitors should also not leave offerings of leaves, rocks, or other items (without following Native Hawaiian cultural protocols, such offerings are simply garbage, which is considered a desecration; they also consume state resources for their disposal).
Visitors should also avoid seeking out "secret" spots promoted in some guide books or by word of mouth. When in doubt, check with the Visitor's Bureau for each island - many "secret" spots are not promoted by the Visitors Bureaus or reputable tour companies for reasons of safety, environmental impact, or cultural sensitivity.
Hawai'i has a wealth of beautiful sites and spectacular vistas - visitors should follow the Hawaiian concept of pono (behavior that is correct, appropriate, respectful) by only visiting areas that are ready for and have invited tourism activity.
It should also be noted that smoking is prohibited on all of Hawai'i's beaches and in state parks.
Check out the Hawaii Tourism Authority's page on Traveling Responsibly in the Islands of Hawai'i.