1.0Gizmodo Australiahttps://gizmodo.com.auAndrew Liszewskihttps://gizmodo.com.au/author/andrewliszewski-usa/rich600338<blockquote class="wp-embedded-content" data-secret="Xdw8dEdkLE"><a href="https://gizmodo.com.au/2018/06/the-hypnotic-wavy-fins-on-this-swimming-alien-like-robot-make-it-agile-as-hell/">The Hypnotic Wavy Fins On This Swimming Alien-Like Robot Make It Agile As Hell</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://gizmodo.com.au/2018/06/the-hypnotic-wavy-fins-on-this-swimming-alien-like-robot-make-it-agile-as-hell/embed/#?secret=Xdw8dEdkLE" width="600" height="338" title="“The Hypnotic Wavy Fins On This Swimming Alien-Like Robot Make It Agile As Hell” — Gizmodo Australia" data-secret="Xdw8dEdkLE" 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/2018/06/13/okbn20mifb6ooilv9tj2.gif?quality=75&w=800800450Replicating the complicated muscle structure that allows fish to wiggle their bodies and dart through the water is no easy feat. But not every underwater creature moves that way. Cuttlefish instead use long fins that undulate in waves to propel themselves, which is an approach that robotics maker Festo found relatively easy to replicate.