Chennai Snake Park snake, annulated sea snake, common wolf snake, common vine snake, striped keelback, checkered keelback, olive keelback, common trinket snake, spectacled cobra, banded sea krait and hook-nosed sea snake. Crocodilian species include the gharial, marsh crocodile, saltwater crocodile, Siamese crocodile, African dwarf crocodile, Nile crocodile and spectacled caiman. Other reptiles at the park include water monitor, Bengal monitor, Indian black turtle, Indian flapshell turtle, Indian star tortoise, spotted rock gecko and South Asian chamaeleon. The snakes are housed in glass-fronted enclosures and the crocodilians and the larger lizards are housed in open-air enclosures protected by parapet walls and wire mesh. The
Snake high as in the Himalayan Mountains of Asia. There are numerous islands from which snakes are absent, such as Ireland, Iceland, and New Zealand (although New Zealand's waters are infrequently visited by the yellow-bellied sea snake and the banded sea krait). All modern snakes are grouped within the suborder Serpentes in Linnean taxonomy, part of the order Squamata, though their precise placement within squamates remains controversial. The two infraorders of Serpentes are: Alethinophidia and Scolecophidia. This separation is based on morphological characteristics and mitochondrial DNA sequence similarity. Alethinophidia is sometimes split into Henophidia and Caenophidia, with the latter consisting of