1.0Gizmodo Australiahttps://gizmodo.com.auraejohnstonhttps://gizmodo.com.au/author/raejohnston/rich600338<blockquote class="wp-embedded-content" data-secret="SXRNeqKlm9"><a href="https://gizmodo.com.au/2017/11/drones-are-weighing-leopard-seals-in-antarctica/">Drones Are ‘Weighing’ Leopard Seals In Antarctica</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://gizmodo.com.au/2017/11/drones-are-weighing-leopard-seals-in-antarctica/embed/#?secret=SXRNeqKlm9" width="600" height="338" title="“Drones Are ‘Weighing’ Leopard Seals In Antarctica” — Gizmodo Australia" data-secret="SXRNeqKlm9" 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); </script> https://gizmodo.com.au/wp-content/uploads/2016/08/drones-kill-drones.jpg?quality=751280720Knowing how much seals weigh can give researchers important information about prey availability, habitat quality, and the overall the health of marine ecosystems. But getting close enough to take measurements is dangerous to say the least. Did you know to measure the seals, they need to be sedated? And sedative is given based on just […]