This is the most touristic area with the towns Lahaina and Kaanapali.
A great place if you want to combine snorkeling and whale watching.
Haiku and the northern side of Maui lives and breathes surfing.
Find out where the notorious "Jaws" hit the coast.
This area is on the southern west side.
A lot of touristic-resorts.
Have a look where to find the remote beaches.
The waves in Maui can get very strong. That's why many Pro-Surfers go to, or live in Maui. But be aware that not just surfing can be dangerous. Any activity which involves the mighty waves can be dangerous especially when the coast is covered in sharp lava stone.
Flash Floods are also possible on hikes to your favorite waterfalls. Flash Floods occur when rainfall transforms a small stream in to a fast flowing river. So be aware that you always have an emergency exit on remote trails next to small streams, even when it does not rain in your area.
Maui is a great place if you are afraid of harmful animals. Maui and all of Hawaii is one of the few places in the world where there are no harmful land animals. So the only thing that you can worry about are Mosquitos.
But for a tropical region Maui has not many Mosquitos.
In the sea there are some venomous Jellyfish and Urchins. Lifeguards will put signs on many beaches which warn you, but inform yourself before you go on extended snorkel tours.
It is pretty hard to make the local people of Maui angry. This is one of the most friendly places in the world. The only way I could imagine, making them angry is disrespecting their culture. People of Maui are very proud of their heritage and culture.
Maui is very safe.
The Hawaiian Island has a very low crime rate.
Rental car break-ins are common in Maui, so don't leave valuables in the car.