You'll notice that the places that you see blue veins are in areas where the skin is thin and the blood vessel underneath is pushing up on it stretching the skin over it. Light hitting the dark color of the vein underneath the skin, in combination with the skin itself is what causes it to appear blue in these areas.
Common krait. The common krait (Bungarus caeruleus), also known as Indian krait or blue krait) is a species of venomous snake of the genus Bungarus found in the jungles of the Indian subcontinent. It is a member of the big four species, inflicting the most snakebites on humans in India.
Chlamydosaurus kingii is one of the most familiar of Australiaâs dragon lizards. It is thick limbed with a long tail and averages about 30 inches in length.The tail is striped with a deeper colored tip. Chlamydosaurus kingii are considered to be what is called a dragon lizard.Their mouth and tongues are pink or sometimes yellow, but the most incredible aspect of the small lizard is its frill.he tail is striped with a deeper colored tip. Chlamydosaurus kingii are considered to be what is called a dragon lizard. Their mouth and tongues are pink or sometimes yellow, but the most incredible aspect of the small lizard is its frill.