문어

Octopus is an interesting fish species in many ways. Fossils indicate that it dates from the middle Jurassic period of the Mesozoic Era, 330 million years ago. It existed before the age of dinosaurs. The largest species can reach up to 10 m in length and weigh up to 272 kg. The tentacles are unique. There are 8 in total, and they serve various functions. The tentacles, which contain many nerve cells, function almost like a brain. When exploring or grasping objects, tentacles move well without brain commands. The tentacle's suckers have amazing suction power. The brain is also weird. The octopus' brain is small, but it is called the 'sage of the sea'...