mertens` or mertens`s water monitor, varanus mertensi, australia. lizard in dark cave habitat. monitor near the river. wildlife

adult albizona animal australia big cave close cobra danger dangerous dark endangered endemic endemism face female gland greece habitat iran lesbos lizard mertens mertensi mertenss monitor montivipera mountain nature near night ocellated old orange ottoman poison poisonous portrait raddei rare reptile river rock small snake threatened turkey turkish varanus venom venomous very viper vipera wagneri water wildlife world xanthina