Sharks can only see in shades of grey.
Findings from a study by Australian scientists, released in September 2012, show that sharks' eyes have just one type of cone opsin - or light-sensitive proteins found in the photoreceptor cells of the retina - instead of the two or more that are needed to see colour. Cone opsins are used to help animals see in bright light, and to differentiate between colours.
they see in black and white
Black, grey and white.
No. but blind people are said to see in black and white
they do not see color their like dogs they can see black white and gray
No. All they see is Black and white.
Black and white are what most people think that dogs see, but in fact they see more of a blue-green color. This is because wolves see in this color and because dogs are a descendent of wolves . The reason wolves and dogs see in this color is because when wolves hunt is in the morning and that makes it easier to see in the low light.
Yes, some people do see in black and white. This is called color blindness.
Well, I'm referring to all terriers. But when you say silky they are brown and black most of the time. Most rarely they are white. Silky terriers are mixed in with a hint of Dachshunds, Cairn terriers, and Yorkshire terriers.
No. only in black and white.
dogs in gneral see all black and white color
Humans see with color. Dogs simply have less cone receptors therefore they do not see light. Dogs only see in black and white.
"Why are you black and white?" is barely ever a question to ask on the Internet. I am not black and white, so I can't answer your question. i am not trying to be racist so dont flip out on me but asians are black and white