Sharks and dolphins are among the fastest creatures in the ocean. To determine their speed accurately is difficult, the most reliable record for a blue shark 39,4 km per hour, while dolphins can swim at a speed up to 40 km to 80 km per hour. Needless to say, they are much better swimmers than us. … More Sharks and dolphins: Two great swimmers in wetsuits.
Reptile eyes can have several shapes. Some amphibians have horizontal pupils and most of the geckos have vertical pupils. Here are some examples It’s difficult to know why their pupils are different. It could be an adaptation to hunting or due to their way of life (diurnal/nocturnal).
Have you ever noticed the different shapes of pupils among animals? Here, I suggest you guess to which species they belong. (move your mouse over the pictures to know the answers) But why so much diversity? Explanation The pupil is the opening conducting light toward the retina and each animal has different needs regarding … More Who own these eyes?