A Cold War hydrophone network built to track Soviet submarines across entire ocean basins was declassified in 1991, and scientists now use those same undersea microphones to follow individual whales calling to each other across thousands of miles of open water

1.0United Kingdom News Beep | NewsBeep.comhttps://www.newsbeep.com/ukNEWSBEEPhttps://www.newsbeep.com/uk/author/newsbeep/A Cold War hydrophone network built to track Soviet submarines across entire ocean basins was declassified in 1991, and scientists now use those same undersea microphones to follow individual whales calling to each other across thousands of miles of open waterrich600338<blockquote class="wp-embedded-content" data-secret="rHmoEN0Y9t"><a href="https://www.newsbeep.com/uk/775612/">A Cold War hydrophone network built to track Soviet submarines across entire ocean basins was declassified in 1991, and scientists now use those same undersea microphones to follow individual whales calling to each other across thousands of miles of open water</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.newsbeep.com/uk/775612/embed/#?secret=rHmoEN0Y9t" width="600" height="338" title="“A Cold War hydrophone network built to track Soviet submarines across entire ocean basins was declassified in 1991, and scientists now use those same undersea microphones to follow individual whales calling to each other across thousands of miles of open water” — United Kingdom News Beep | NewsBeep.com" data-secret="rHmoEN0Y9t" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.newsbeep.com/uk/wp-includes/js/wp-embed.min.js </script> https://www.newsbeep.com/uk/wp-content/uploads/2026/09/whale-768x403.png600315