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แต่นักวิทยาศาสตร์เดนมาร์กคนข้างล่างนี้กลับบอกว่า
Banded Sea Krait หรือชื่อไทยว่า
งูสมิงทะเลปากเหลือง พยายามพรางตัวให้ศัตรูนึกว่ามี ๒ หัวเพื่อให้รอดพ้นจากการโจมตีของศัตรู
Venomous sea snakes use skin markings and movement to fool predators into thinking their tail is a second head, according to a study.
Scientists found that the yellow-lipped sea krait twists its tail, giving the illusion of having two heads and a double load of deadly venom.
The team published their work in the journal Marine Ecology.
They believe this two-headed mimicry has evolved to protect the sea snake from attack while it searches for prey.
Despite being extremely venomous, the snakes are vulnerable to a number of predators, including larger fish, sharks and birds.
Arne Rasmussen, from the Royal Danish Academy of Fine Arts' School of Conservation in Copenhagen, Denmark, led the study.
http://news.bbc.co.uk/2/hi/science/nature/8184364.stm 
