[1] Varanus palawanensis can reach total length of (including tail) 2 metres (6,6 ft).

[2] The best studied water monitor population of the Philippines is that of Calauit ( Gaulke 1989 ), a small islet belonging to the Calamian Island Group at the north-easterly margin of Palawan Province.

Gaulke ( 1989 ) provided morphological data for 167 specimens .

The longest specimen had a total length of 1880 mm with parts of its tail missing.

[2] Varanus palawanensis has enough differences to be considered a distinct species[3] from the closely related V. salvator (water monitor), V. marmoratus (marbled water monitor), and V. rasmusseni.