There are mainly three species of Indian Crocodile, namely, Mugger or Fresh Water crocodile
(Crocodilus palustris);Estuarine crocodile (Crocodilus porosus); Gharial (Gavialis gangeticus). All
the three species were found in West Bengal. The present status of Mugger or fresh water crocodile
and Gharial are unknown. But few specimen of Gharial were rescued from the river Bhagirathi-Hooghly
in Howrah.
The Estuarine crocodile is found in the Gangetic delta of Sunderban estuary in good numbers.
Artificial hatching & rearing had been initiated. The Sunderbans estuary covers an area of 4389
sq.km and forms suitable natural haunt for estuarine crocodile. This species in the past was in
abundance in the mangrove forests, but for the value of its skin, were mercilessly killed to such
an extent as to threaten the species with extinction.
Info from here...
