NAINITAL: With the discovery in Uttarakhand recently, the total number of varieties of butterflies found in the hill state is 453.

Bhimtal, is the largest of all the lakes covering 72 ha. Lake Naukuchia tal is the deepest of all, with a maximum of 40.8 m. The lake region of Bhimtal, Naukuchiatal and Sattal is unique for its biodiversity since it falls in the blend zone of Paleastic and Indo-Malayan zoo-geography.