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.
Giant freshwater stingrays are listed as endangered by the International Union for the Conservation of Nature, in part due to Hogan's and Nantarika's work. âThese rays are decreasing rapidly since there is no national law to protect them,â Nantarika says.he giant freshwater stingray has the longest spine of any species of ray, up to 15 inches, and carries powerful venom. The animal uses its spine for defense and it can be lethal, but injuries to people are quite rare. Check out this archive video of Zeb Hogan examining another freshwater stingray.