The Hawaiian Green Sea Turtle, or as the locals call it, Honu, has been making a comeback in the waters of Maui and are officially off the endagered species list. There are quite a few that make their home in the South Maui waters, and I've been hearing reports from our guests of frequent sightings at Mana Kai.
I've swam with many Honu while staying on Maui and know from experience how awesome it is to swim with these gentle (and sometimes HUGE) creatures. They've become used to people in the water and don't seem the least bit phased when I've gotten close enough to touch. (Don't touch them though! It's illegal and you could get bit!)