1.0DiverTownhttps://www.divertown.com/en/DiverTownhttps://www.divertown.com/en/author/divertown/rich600338<blockquote class="wp-embedded-content" data-secret="AscdmCtMTn"><a href="https://www.divertown.com/en/command-signals/">What is Command Signals?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.divertown.com/en/command-signals/embed/#?secret=AscdmCtMTn" width="600" height="338" title="“What is Command Signals?” — DiverTown" data-secret="AscdmCtMTn" 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/coral-reef-and-diver-1024x683.jpg1024683Command signals are an essential aspect of scuba diving, ensuring effective communication and safety among divers. These signals allow divers to convey critical information without relying on verbal communication, which is impossible underwater due to the limitations of speaking and hearing in such an environment. As diving gained popularity and became more organized, the development and standardization of command signals became crucial for coordinating movements, sharing information, and handling emergencies.