そうだったのか！カタツムリとナメクジ（NF絵本）
So That’s How It Is! Snails and Slugs
カテゴリー: Japanese Children's Books、おすすめ！日本の子どもの本、絵本／picture books、ノンフィクション／nonfiction
『そうだったのか！カタツムリとナメクジ』
偶然出会ったカタツムリの進む速さを測りたくなった著者は、まず身近なナメクジを、その後カタツムリを飼育した。カタツムリの体のつくりを観察し、約３億１千万年前、海の巻貝から進化したわけを探り、冬眠と夏眠をくり返す姿から、大量絶滅期の厳しい環境を生き延びた要因のひとつにたどりつく 。また、カタツムリから進化したナメクジは体の水分を保つための殻を捨てた代わりに、粘液を豊富に分泌することに気づく。両者の飼育を通じて、予期せぬ出来事が謎解きのヒントになり、飼育の楽しさを伝える読みもの。（坂口）
| 出版社 | 童心社 |
|---|---|
| 初版年 | 2025年 |
| ISBN | 978-4-494-02084-3 |
| ページ数 | 135頁 |
| サイズ | 22×15 |
| 対象年齢 | 9歳から |
| キーワード | 生態、飼育、進化 |
So That’s How It Is! Snails and Slugs
After coming across a snail by chance, the author wanted to measure its speed. She started breeding common slugs before moving on to snails. Observing the snail’s anatomy, she traced its evolution from sea snails some 310 million years ago. Studying its cycles of hibernation and estivation, she identified one factor that likely helped it survive mass extinction events. She also noted that slugs evolved from snails and shed their shells—which served to retain bodily moisture—instead developing the ability to secrete copious amounts of mucus. Through raising both creatures, unexpected occurrences provided clues to solving mysteries, making this an engaging read that conveys the joy of breeding the organisms.(SAKAGUCHI)
- Text Yasuko SHIMADA｜Ill. Koshiro HATA
- DOSHINSHA PUBLISHING.,CO.,LTD.
- 2025
- 135 pages
- 22×15
- ISBN 978-4-494-02084-3
- Ages 9 +
Ecology, Breeding, Evolution