Ko Man Wichai is favorite amongst the far islands dive sites because of its diversity in terrain. Its profile features a wall on the west side of the small bay – home to many six-banded angelfish – as well as finger-like canyons on the east side (surprisingly similar to the south end of Ko Chuang off of Samaesan).

Large boulders characterize the central area of the bay and sometimes invite small bamboo sharks for a nap in the shade.