If you’re planning on visiting the ocean while on Maui (which is quite likely) consider protecting your iphone/Android or smart phone device while in the water . I just found this product on sale (Google Offer) and it is certified up to 100 feet, so you could take it scuba diving with you if you were planning on not diving deeper then 100 feet.

Link to Google Offer:
Link to underwater camera case

• Provides waterproof protection for your iPhone/Android smartphone while maintaining full touch screen functionality
• Clear windows on both sides so you can take pictures or videos
• IPX8-certified to 100 feet
• One-year product warranty
• Universal size fits all cell phones, digital cameras, or mp3 players
• Comes with handy 3-foot-long neck strap