Does the cuttlefish have green eyes ?
610580
Cuttlefish has only normal eyes.It has no green eyes.
37162
Oddly enough there are only two pigments in birds and amphibians two, exactly the same two pigments. Yet we see birds and frogs in every colour of the rainbow. So we really shouldn’t be surprised to see a few bright mammals.\n \nThe way that animals usually generate blue and green colours is by utilising fibres arranged in rows or grids to refract light. That allows the skin to scatter the short blue and green wavelengths back to the observer while absorbing the longer reds. In the case of the mandrill the skin contains rows of collagen fibres designed to achieve exactly that purpose.\n\nThe only other blue mammal I know of is the vervet monkey, which has bright blue testicles. You can see a picture of one in the link below.
1162708
No\n\nA quote from a presentation to “The Whale in Science and Culture” symposium at Western Oregon University, Monmouth, Oregon, January 21, 2005\n\n"We love whales because they are gentle, in spite of their large size. We think we see a quizzical twinkle in their eyes, and maybe we do. Whale’s eyes are located directly above the corners of their lips, near the shoulders. They are small, about the size of a grapefruit in right whales and sperm whales. The eyelids, though present, are so swollen with fatty matter that they are practically immobile. There are no eyelashes. So the eye is there looking back at us curiously—or at least we think so."
696902
Yes, but the fish have three heads the trees glow green and the beach has been turned into glass!! Not to much to do at night though!
782798
Possibly something about their life span (they live only about a year or two) or the fact that an octopus is really just a giant squid.  Or that they are sometimes known as "devil fish".  Or that they are masters of disguise and use camouflage well.  These sites should give you lots of ideas.  I hope this helps.
61373
There is a green respiratory pigments called chlorocruorin, which is green in dilute concentrations, and red in high concentrations. \nHowever, this pigment occurs mostly in annelids (earthworms and their relatives). \nThe greenish fluids in "bugs" (I'm assuming you mean arthropods)could come from defense glands or similar structures, or it could be their gut content in case they were crushed.\nThey have other respiratory pigments, and most are red-violet-bluish in color. Insects don't have pigments.
1146931
They are arachnids, not crustaceans. Easy to find on the Indian Ocean shores. Dead animals eaters. Breath using gills, two sexed animals, egg layers, free swimmers. Outstanding feature: their blood is used as a reactive in a positive detection of human encephalitis.\n\nmore info: Barnes book of invertebrates
641044
I imagine you are referring to their respective body fluids.  In that case I think crabs are actually blue.
245877
Most sites just say "ink".  But this is the closest I came to finding out what it is made of:\n\nThe ink is almost pure melanin and does not dilute in sea water. The ink is contained in an organ called the ink sac which is located near the rectum and is unique to cephalopods.\n\nWell, I did not find an exact answer, but I sure learned more about squids and octipus then I ever needed to know.
334962
Depends on the lighting. Some fish are blind in underground caves and do not see at all. The majority are very aware of their surroundings both with sight and chemical/electrical sensitivity. Sound has an effect with communication. Sight is but one mode of sight seeing. Deep sea creatures are capable of producing artificial light but I do not feel that there is nothing artificial about it. Seeing well is a matter of survival.
1072522
There are several spiders that can be green.  One\nof the most likely in England is Micrommata\nvirescens in the family Sparassidae.  Some crab\nspiders (family Thomisidae) or long-jawed spiders\n(Tetragnatha) are also green.  The color of some\nspiders can vary depending on what they have been eating.  An illustration of the Micrommata is\nin the Larousse Guide to Spiders.
396788
umm... giraffes are not green... maybe you were looking at some other animal..\n\n\njust so you will believe me... here's a picture of a giraffe!\n\n\nhttp://www.nilesafaris.com/images/giraffe1.jpg
729129
Yes, Snakes can see with their eyes. But they do not have colour vision.Snakes have rods and cones in their eyes, as do we, though in different numbers. They do not have the diversity colored oil droplets (presumed to have been lost when snakes when nocturnal and subterranean) in their photoreceptors that mammals and birds do, so, while they do have color vision, it isn't as broad ranged as ours is. They do have a yellow filter which, filling the lens, absorbs ultraviolet light, protecting the eye.\n\nSnakes use a combination of infrared vision (developed in the trigeminal nerve), variable (by species) visual acuity and color detection, limited eye mobility, and chemosensation to find prey and recognize features in their environment (including their keepers).\n\nLizard (including geckos) and turtle retinas contain multicolored oil droplets in their photoreceptors, so they can perceive color. The opsin proteins in the cones in the eye are "calibrated" to detect different wavelengths. In many species, this enables them to see into the higher wavelengths beyond the scope of unaided human vision: into the UV range.\n\nNocturnal reptiles usually have smaller eyes than diurnal ones, but relatively large pupillary and lens aperture and cornea. This improves their light-gathering ability, but at the same time reduces visual acuity.\n\nLizards can focus on near and far by squeezing or stretching their lenses, using the ciliary muscles and annular pads. Pupils dilate and contract in response to light. Nocturnal geckos like the tokay have a stenopaic pupil: contracts into a vertical slit composed of a linear array of dots. Some nocturnal lizards have slit pupils, others are round. Lizards, unlike other reptiles, have a choroid body, called the conus papillaris. Projecting out into the vitrious humor, it nourishes the cornea.\n\nSo if you are having any doubts just mail me, Thank you for the question,\n\nWith love\nJimmy
321232
i like their ink sacs!  and if you dissect one, they have a special pen (remnants of the shell in molluscs) that you can write with!  so fun!  \n\nps. there are seen in all squids
424002
It all depends on what environment they live in. There are nocturnal (night) animals that see very well at nightime. Birds of prey (eagles, hawks, falcons) have great eyesight for when they are high in the sky. Octopi have great eyes for being underwater. SO, it all depends on where they are.
25149
seeing a crab of the opposite sex?
1071274
You have fish in inverted commas, does that mean you are unsure?  Did it have eyes, a mouth, gills?  Was it a vertebrate? The first thing I thought of was a sea slug or flatworm.  A sea slug seems more likely in a Carribean coral reef.