Although some species of crocodiles, such as the mugger crocodile and Nile crocodile (Crocodylus niloticus,) are highly adaptable and can live well in a variety of aquatic habitats, others such as the Malayan gharial (Tomistoma schlegelii) and the West African dwarf crocodile are restricted to forested, swampy areas. Deep water is a prime requisite for safety and security from drought, but some species live in places where the water dries up annually. In these habitats, crocodiles excavate deep tunnels to wait out inhospitable weather conditions. Crocodiles have found niches in habitats including hill
streams, large rivers, marshes, ponds, lakes, canals, reservoirs, as well as saline habitats such as mangrove creeks and saltpans.
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