The severn wonders of the medieval world are Stonehenge, Colosseum, Catacombs of Kom el Shoqafa, Great Wall of China, Porcelain Tower of Nanjing, Hagia Sophia and Leaning Tower of Pisa.
Sperm whale's brain is the largest known of any modern or extinct animal, weighing on average about 8 kilograms.
Emu, Kiwi, Cassowary, Tahake, Ostrich, Penguin & Rhea are few birds which cannot fly.
Diving bell spider or Water spider is the only spider known to spend its whole life under water. However it breathes air, which it traps in a bubble held by hairs on its abdomen and legs. .
Megachile pluto also referred to as Wallace's Giant Bee, a leafcutter bee whose females can attain a length of 39 mm.