The earth is home to over 8.7 million species of organisms, with discoveries of new lifeforms being made frequently. Moreover, some species animals are being rediscovered, because they were once thought to be long extinct. For instance, the Coelacanth was a fish that was known only by its fossils and is thought to have died out 66 million years ago. However, it was rediscovered back in 1938 and is now considered to be a living fossil. Read on to explore more strange and unusual facts about animals below:
Giant “Windows” to the World
The average human eye measures in at just under an inch in diameter. This is hilariously small when compared to other eyes in the animal kingdom. The biggest ever pair of eyes belongs to the giant squid – measuring over 10 inches in diameter. It’s pupil alone measures over 3.5 inches in diameter. For comparison, its eyes are bigger than a football (8.65 inches in diameter) and its pupils are much larger than a cricket ball (2.86 inches in diameter).
Armed to the Teeth
A human will have 52 teeth over the course of their lifetime, with 20 teeth as a child and 32 teeth as an adult. Crocodiles have 60 to 72 teeth, depending upon the species. Sharks have a lot more teeth- for instance, the great white shark has around 300 teeth, spread out over 3 rows. However, the common garden snail has a lot more teeth – 14,000 to be exact. However, these “teeth”, or more commonly called Radula is used similar to a conveyer belt, shredding tiny particles of food and then moving it to the snail’s gullet, where the food begins to be digested.
Stronger than Steel
Pound for pound, silk produced by spiders is stronger than steel. In other words, a strand of spider-silk is stronger than a strand of steel, of the same diameter. Kevlar is a man-made polymer that is stronger and more durable, finding applications in bulletproof vests and racing sails. However, scientists have discovered that the teeth of a species of sea snails, called limpets, are almost as strong as kevlar, able to withstand enormous pressures, similar to the ones that turn carbon into diamonds It is made by embedding a mineral called goethite in the comparatively softer shell of the chitin.
From mass extinctions to vermicomposting, explore more interesting topics by visiting BYJU’S Website. Alternatively, explore their YouTube channel to discover more topics related to science.