{"id":62983,"date":"2026-05-03T05:15:14","date_gmt":"2026-05-02T20:15:14","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=62983"},"modified":"2026-05-03T05:19:48","modified_gmt":"2026-05-02T20:19:48","slug":"clones-morphs-and-100-year-naps-the-tiny-monster-known-as-daphnia","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=62983&lang=en","title":{"rendered":"Clones, Morphs, and 100-Year Naps: The Tiny Monster Known as &#8220;Daphnia&#8221;"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>I\u2019m Kuwako Ken, your science trainer. Every day is an experiment.<\/strong><\/span><\/p>\n<p>Have you ever held your breath while peering through a microscope, stunned by the tiny world unfolding before your eyes? Together with trainee I, we observed water fleas. Using the carefully captured images taken from various angles, I\u2019d love to introduce just how astonishing these tiny creatures really are. In a body measuring only 1\u20132 mm, water fleas pack in evolutionary ingenuity, survival strategies, and the sheer wonder of life itself.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-62976 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.45.jpeg\" alt=\"\" width=\"323\" height=\"303\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.45.jpeg 488w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.45-300x282.jpeg 300w\" sizes=\"auto, (max-width: 323px) 100vw, 323px\" \/><\/p>\n<p>First, take a look at this video to see how they move. They almost look like aliens.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u30af\u30ed\u30fc\u30f3\u3067\u5897\u3048\u3066\u3001\u5909\u8eab\u3057\u3066\u3001100\u5e74\u7720\u308b\u2014\u2014\u30df\u30b8\u30f3\u30b3\u3068\u3044\u3046\u540d\u306e\u5c0f\u3055\u306a\u602a\u7269\" width=\"1140\" height=\"641\" src=\"https:\/\/www.youtube.com\/embed\/oLjOUdMp1jM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h3>They Actually Swim with \u201cArms\u201d<\/h3>\n<p>The name \u201cwater flea\u201d comes from their jerky, hopping movement, but what they\u2019re really using to swim are their antennae (specifically the second antennae). It\u2019s like they\u2019re doing the butterfly stroke. Under the microscope, you can see these whisker-like appendages moving dynamically. Imagine a millimeter-sized swimmer performing butterfly strokes underwater.<\/p>\n<h3>A Beating Heart and Birth\u2014Fully Visible<\/h3>\n<p>One of the biggest attractions of water fleas is their transparency, allowing you to observe their internal structures while they\u2019re alive.<\/p>\n<ul>\n<li><b>Heartbeat:<\/b> You can see a tiny heart on their back beating at incredible speed. The rate changes with water temperature and environmental conditions, making it a fascinating subject for observation experiments.<\/li>\n<li><b>Brood chamber:<\/b> Inside a pouch on their back, you can watch baby water fleas twitching\u2014and even catch the dramatic moment when they are suddenly released into the world.<\/li>\n<\/ul>\n<p style=\"text-align: center;\">Could this be an egg?<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-62978 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.03.jpeg\" alt=\"\" width=\"378\" height=\"358\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.03.jpeg 632w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.03-300x284.jpeg 300w\" sizes=\"auto, (max-width: 378px) 100vw, 378px\" \/><\/p>\n<p>Their transparent body is like a glass-walled hospital. It may not be great for their privacy, but for observers, it\u2019s a dream organism. This time, we even captured the moment of defecation\u2014take a look at the video.<\/p>\n<p style=\"text-align: center;\">Caught in the act.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-62977 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.29.jpeg\" alt=\"\" width=\"489\" height=\"377\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.29.jpeg 902w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.29-300x231.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.29-768x593.jpeg 768w\" sizes=\"auto, (max-width: 489px) 100vw, 489px\" \/><\/p>\n<h3>Switching Between Clones and Males: The Remarkable Strategy of Parthenogenesis<\/h3>\n<p>Perhaps the most surprising aspect of water flea biology is their reproductive strategy.<\/p>\n<ul>\n<li><b>Usually all female:<\/b> When conditions are favorable, females produce genetically identical \u201cclone\u201d daughters, allowing the population to grow explosively.<\/li>\n<li><b>Males appear in tough times:<\/b> When conditions worsen\u2014like declining water quality or the approach of winter\u2014males suddenly appear. Mating then occurs, producing \u201cresting eggs\u201d that can withstand drying and cold. Amazingly, these eggs can hatch even after more than 100 years, acting like biological time capsules.<\/li>\n<\/ul>\n<p>\u201cWhen things are good, copy yourself. When things get tough, introduce diversity.\u201d It\u2019s a simple yet incredibly rational survival strategy. It\u2019s astonishing that such tiny creatures possess survival wisdom that rivals\u2014or even surpasses\u2014our own.<\/p>\n<h3>Shapeshifting Against Predators: The Mystery of Phenotypic Plasticity<\/h3>\n<p>Water fleas can actually change their body shape when they sense predators like fish or mayfly larvae.<\/p>\n<p>By detecting chemical signals that indicate danger, they may grow pointed heads or extend tail spines, transforming into harder-to-eat forms. Their horned, armored appearance feels like something out of a fantasy world.<\/p>\n<p>This phenomenon, known as phenotypic plasticity, is a fascinating topic in biology. Even though they share the same genes, they can alter their form depending on the environment\u2014a concept that also applies, in a broader sense, to our own cells.<\/p>\n<h3>Sensitive to Light: A Daily Vertical Journey<\/h3>\n<p>Water fleas respond strongly to light\u2014sometimes swimming toward it, other times avoiding it.<\/p>\n<p>In nature, they perform \u201cdiel vertical migration\u201d: during the day, they sink to deeper waters to avoid predators, and at night, they rise to the surface to feed. This phenomenon is seen in plankton across lakes and oceans\u2014a massive, planet-wide migration happening every night. Try shining a light on them and observe how they move\u2014it\u2019s surprisingly engaging.<\/p>\n<h3>The Truth Behind the \u201cOne-Eyed Monster\u201d<\/h3>\n<p>At first glance, you\u2019ll notice a single large black spot in the center of their face, making them look like a one-eyed creature. But biologically, it\u2019s far more complex.<\/p>\n<p>This black spot is actually a compound eye. During their embryonic stage, water fleas have two eyes, just like we do. As they grow, these two eyes fuse into one large central eye.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-62979 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.08.jpeg\" alt=\"\" width=\"380\" height=\"370\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.08.jpeg 380w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-5.06.08-300x292.jpeg 300w\" sizes=\"auto, (max-width: 380px) 100vw, 380px\" \/><\/p>\n<p>Interestingly, some related species are named after the one-eyed giant \u201cCyclops\u201d from Greek mythology. Moments where mythology and biology intersect like this are truly exciting.<\/p>\n<p style=\"text-align: center;\">A copepod photographed previously. Definitely a Cyclops.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-48650 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg\" alt=\"\" width=\"388\" height=\"295\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg 1584w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171-300x228.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171-1024x780.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171-768x585.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171-1536x1169.jpg 1536w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/p>\n<h3>They Actually Have a \u201cSecond Eye\u201d<\/h3>\n<p>Look closely beneath the large compound eye, and you may spot a smaller black dot. This is a simple eye.<\/p>\n<ul>\n<li><b>Compound eye:<\/b> Detects shapes and movement.<\/li>\n<li><b>Simple eye:<\/b> Senses light intensity\u2014whether it\u2019s bright or dark.<\/li>\n<\/ul>\n<p>So while it looks like they have one big eye, the reality is a fused pair of eyes plus an additional smaller one. Beneath the simple appearance lies a surprisingly sophisticated system.<\/p>\n<h3>The Eye That Never Stops Moving<\/h3>\n<p>Take a close look at a living water flea under the microscope. That single large eye is constantly twitching and shifting.<\/p>\n<p>Using tiny muscles, the water flea moves its eye to scan its surroundings in all directions\u2014checking for predators and searching for food.<\/p>\n<p>A creature smaller than 1 mm, equipped with its own kind of \u201cradar,\u201d sensing the world\u2014once you realize this, that quirky little hopping motion starts to look entirely different, doesn\u2019t it?<\/p>\n<h3>Contact &amp; Requests<\/h3>\n<p>Let\u2019s bring the wonder of science closer to everyday life. I share fun experiments you can try at home, along with clear explanations and tips\u2014feel free to explore! \u30fbThe content of this site has been published as a book. Learn more <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a> \u30fbAbout the creator, Kuwako Ken: <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a> \u30fbFor requests (writing, lectures, workshops, TV supervision, appearances, etc.): <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a> <span class=\"s2\">\u30fbUpdates are shared on <a href=\"https:\/\/x.com\/kuwako\">X<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Idea Channel<\/a> features experiment videos!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 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href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>I\u2019m Kuwako Ken, your science trainer. Every day is an experiment. Have you ever held your breath while peering [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":63000,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[781],"tags":[],"class_list":["post-62983","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-05-03-4.52.45-1.jpeg","jetpack-related-posts":[{"id":62283,"url":"https:\/\/phys-edu.net\/wp\/?p=62283&lang=en","url_meta":{"origin":62983,"position":0},"title":"Step Into a Tiny Universe Under the Microscope! A Guide to Discovering \u201cLiving Works of Art\u201d in Your Biotope","author":"\u6851\u5b50 \u7814","date":"2026\u5e744\u670812\u65e5","format":false,"excerpt":"I am Ken Kuwako, your science trainer. Every day i\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/37648b63c0304fcc833f5fc652edd171.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":56118,"url":"https:\/\/phys-edu.net\/wp\/?p=56118&lang=en","url_meta":{"origin":62983,"position":1},"title":"From Humble Moss to Star! Witness Male &#038; Female Liverworts and Their Spring-Loaded Spores Under the Microscope","author":"\u6851\u5b50 \u7814","date":"2025\u5e7411\u670820\u65e5","format":false,"excerpt":"I'm Ken Kuwako, Science Trainer. Every day is an e\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b1963d07dcbfdb4025a8c27b3bec5ed0.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b1963d07dcbfdb4025a8c27b3bec5ed0.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b1963d07dcbfdb4025a8c27b3bec5ed0.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2025\/06\/b1963d07dcbfdb4025a8c27b3bec5ed0.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":54555,"url":"https:\/\/phys-edu.net\/wp\/?p=54555&lang=en","url_meta":{"origin":62983,"position":2},"title":"It\u2019s Not Magic! The Science Behind the Balloon That Bends Water (Static Electricity Experiment)","author":"\u6851\u5b50 \u7814","date":"2025\u5e7410\u670818\u65e5","format":false,"excerpt":"Hi, I'm Ken Kuwako, your Science Trainer. Every da\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/37368528cb7a1c21ee65dac98d309c4d.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/37368528cb7a1c21ee65dac98d309c4d.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/02\/37368528cb7a1c21ee65dac98d309c4d.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":59793,"url":"https:\/\/phys-edu.net\/wp\/?p=59793&lang=en","url_meta":{"origin":62983,"position":3},"title":"Frozen in a Flash! 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Every day i\u2026","rel":"","context":"Science","block_context":{"text":"Science","link":"https:\/\/phys-edu.net\/wp\/?cat=781&lang=en"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/08\/531662106aef23a3584e33bbea27e6f7.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":58618,"url":"https:\/\/phys-edu.net\/wp\/?p=58618&lang=en","url_meta":{"origin":62983,"position":4},"title":"The Kitchen Is a Laboratory! 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