Insects hate the ocean.<\/p>\n
It\u2019s not just a preference. It\u2019s biology. The prevailing theory for centuries has been simple: water pressure crushes them. Deep down, the squeeze fills their tiny respiratory tubes with fluid. They cave in. Game over.<\/p>\n
Unless you are a Chaoborus edulis<\/strong> larva.<\/p>\n These midges, known locally in East Africa as lake flies, don\u2019t care about physics. Billions of them live in Lake Malawi. They dive. Deep.<\/p>\n They spend their daylight hours over 656 feet\u2014200 meters\u2014below the surface. At night, they swim up to eat. Then back down.<\/p>\n It defies the old rules.<\/p>\n We used to think pressure was the barrier. The logic held water. Air sacs compress. Lungs fail. Implosion.<\/p>\n But Philip Matthews from the University of British Columbia looked closer.<\/p>\n \u201cThe gas inside an air sac is not pressured… This begged the question: how deep can these insects dive before their secretions cannot expand against the pressure?\u201d<\/p>\n<\/blockquote>\n Matthews and his team wanted to know where the breaking point was. They tracked the larvae in Lake Malawi using sonar. They watched them dive. Then they put them in pressure chambers.<\/p>\n They cranked up the squeeze.<\/p>\n The trick isn\u2019t muscle. It\u2019s chemistry.<\/p>\n Inside the Chaoborus midge larvae<\/strong>, you find two pairs of air sacs. These aren\u2019t rigid shells. They\u2019re flexible. The walls are coated in resilin<\/strong>.<\/p>\n Resilin sounds passive. It\u2019s often called the rubber of the insect world. Flexible. Durable. But here, it\u2019s active.<\/p>\n The larvae change the pH level of the sac walls. Acidic? Basic? It changes the volume. The sac swells or shrinks. It\u2019s a distinct \u201cchemo-mechanical\u201d system.<\/p>\n Think of it like a biological bellows.<\/p>\n \u201cBy regulating the pH of the air sacks\u2019 walls, they cause them to expand,\u201d Matthews tells Popular Science<\/em>.<\/p>\n<\/blockquote>\n This lets the larvae control their float. They sink. They rise. No fins needed.<\/p>\n This is where the numbers get weird.<\/p>\n The larvae dive 656 feet regularly. But what is the limit?<\/p>\n The researchers tested it. They pressed them to depths equivalent to over 1,213 feet<\/strong> (400 meters).<\/p>\n They didn\u2019t break.<\/p>\n The air sacs held. The resilin didn\u2019t fail. The larvae survived pressure way deeper than their daily routine requires.<\/p>\n This changes everything.<\/p>\n If pressure isn\u2019t the problem, what is?<\/p>\n The study suggests the old excuse is dead. Insects can<\/em> handle the crush. Their bodies are built for it.<\/p>\n So why aren\u2019t there midges in the Atlantic?<\/p>\n The answer might be elsewhere. Salinity? Food? Predators? We don\u2019t know yet. But the physics barrier is gone.<\/p>\n There\u2019s more to it, though.<\/p>\n Evan McKenzie, a PhD student and co-author, sees something else entirely. He doesn\u2019t just see a bug. He sees engineering.<\/p>\n \u201cResilin… generates force of its own… changing the shape and volume,\u201d McKenzie says.<\/p>\n<\/blockquote>\n This isn\u2019t just about bugs. It\u2019s about materials.<\/p>\n Scientists can now look at resilin<\/strong> as a dynamic substance. One that morphs based on chemical changes. Soft robotics. Medical devices. Sensors.<\/p>\n The insect survives the deep. The material might survive our factories.<\/p>\n We thought we knew why insects avoid the ocean. We were wrong. Or at least, we were missing the point. The pressure doesn\u2019t kill them.<\/p>\n It makes them flexible.<\/p>\n","protected":false},"excerpt":{"rendered":" Insects hate the ocean. It\u2019s not just a preference. It\u2019s biology. The prevailing theory for centuries has been simple: water pressure crushes them. Deep down, the squeeze fills their tiny respiratory tubes with fluid. They cave in. Game over. Unless you are a Chaoborus edulis larva. These midges, known locally in East Africa as lake […]<\/p>\n","protected":false},"author":1,"featured_media":7961,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":""},"categories":[1],"tags":[],"wpm_language_slugs":{"cs":"hmyz-v-hloubce-jak-larvy-chaoborus-prezivaji-v-hloubkach-vice-nez","de":"tiefseeinsekten-wie-chaoborus-larven-1213-fus-unter-wasser-uberleben","en":"deep-sea-insects-how-chaoborus-larvae-survive-1213-feet-underwater","es":"insectos-de-aguas-profundas-como-sobreviven-las-larvas-de-chaoborus","fr":"insectes-des-grands-fonds-comment-les-larves-de-chaoborus-survivent","id":"serangga-laut-dalam-bagaimana-larva-chaoborus-bertahan-hidup-di","it":"insetti-delle-profondita-marine-come-le-larve-di-chaoborus","nl":"diepzee-insecten-hoe-chaoborus-larven-350-meter-onder-water-overleven","pl":"owady-na-glebokosci-jak-larwy-chaoborus-przezywaja-na-glebokosciach","pt":"insetos-do-fundo-do-mar-como-as-larvas-de-chaoborus-sobrevivem-a","ru-ru":"nasekomye-na-glubine-kak-lichinki-chaoborus-vyzhivajut-na-glubine","uk-ua":"komahi-na-glibini-jak-lichinki-chaoborus-vizhivajut-na-glibini-ponad"},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/posts\/7962"}],"collection":[{"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/comments?post=7962"}],"version-history":[{"count":0,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/posts\/7962\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/media\/7961"}],"wp:attachment":[{"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/media?parent=7962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/categories?post=7962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.schooler.org.ua\/en\/wp-json\/wp\/v2\/tags?post=7962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Why don’t insects live in the deep ocean?<\/h3>\n
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How Chaoborus midge larvae control buoyancy<\/h3>\n
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Can insect air sacs withstand deep-sea pressure?<\/h3>\n
Which factors keep insects out of open water?<\/h3>\n
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