Exotic mertens' water monitor, varanus mertensi basking on the shore, crawling and flicking its tongue, endangered wildlife species endemic to northern Australia, close up shot

mertens water monitor flick tongue flicking varanus mertensi animal reptile wildlife species lizard northern australia endemic habitat environment endangered conservation zoo threatened scale skin creek natural basking shore goanna park territory national litchfield lagoon australian western exotic tropical reptilian reserve lone pine koala sanctuary stream freshwater queensland rest crawl gait move