Golf ball 2 has a northern hemisphere N above the equatorial line 16, and
a southern hemisphere S below the equatorial line 16. Each of the
northern hemisphere N and the southern hemisphere S has a pole vicinity
region 18, an equator vicinity region 20 and a coordination region 22.
The pole vicinity region 18, the equator vicinity region 20 and the
coordination region 22 have numerous dimples 8, respectively. The dimple
pattern in the pole vicinity region 18 includes multiple units that are
rotationally symmetric each other centered on the pole point P. The
dimple pattern in the equator vicinity region 20 includes multiple units
that are rotationally symmetric each other centered on the pole point P.
Number of the units in the pole vicinity region 18 is different from
number of the units in the equator vicinity region 20. The dimple pattern
in the coordination region 22 cannot be comparted into multiple units
that are rotationally symmetric each other centered on the pole point P.