Science and nature Sea urchins are amazing. Locusts are amazing. design biology Chuko Shinsho

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Science and nature
The animals that fly in the sky are birds and insects. Birds have bones in their bodies and fly by moving the muscles supported by the bones. They need a lot of oxygen to fly, so the oxygen taken in by pulmonary respiration is put on the blood and spread to every corner of the body. On the other hand, insects do not have bones. Instead, they cover their bodies with a hard chitin skin and use a spring pendulum that combines muscle and cuticle to quickly fly. Insects also need oxygen to fly, but they do not have lungs. How do they take oxygen into their bodies? Even the same flying animals have completely different body structures. This book introduces five groups of cnidarians, arthropods, molluscs, echinoderms, and chordates, each with a different body structure and each flourishing world.