1.0DiverTownhttps://www.divertown.com/en/DiverTownhttps://www.divertown.com/en/author/divertown/rich600338<blockquote class="wp-embedded-content" data-secret="WVRh4f7DFZ"><a href="https://www.divertown.com/en/blue-hole/">What is a Blue Hole?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.divertown.com/en/blue-hole/embed/#?secret=WVRh4f7DFZ" width="600" height="338" title="“What is a Blue Hole?” — DiverTown" data-secret="WVRh4f7DFZ" 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.divertown.com/wp-includes/js/wp-embed.min.js </script> https://www.divertown.com/wp-content/uploads/2024/09/cave-instructor-guiding-in-a-cenote-1024x576.jpg1024576What is a Blue Hole? A blue hole is a captivating underwater geological feature that intrigues scientists, divers, and marine enthusiasts alike. These large marine caverns or sinkholes are open to the surface and often grant access to submerged cave passages, providing unique environments for marine life to thrive. Blue holes are found in various […]