')}.amp-carousel-button-prev{background-image:url('data:image/svg+xml;charset=utf-8,Previous ')}.ampstart-dropdown{min-width:200px}.ampstart-dropdown.absolute{z-index:100}.ampstart-dropdown.absolute>section,.ampstart-dropdown.absolute>section>header{height:100%}.ampstart-dropdown>section>header{background-color:#000;border:0;color:#fff}.ampstart-dropdown>section>header:after{display:inline-block;content:"+";padding:0 0 0 1.5rem;color:#003f93}.ampstart-dropdown>[expanded]>header:after{content:"–"}.absolute .ampstart-dropdown-items{z-index:200}.ampstart-dropdown-item{background-color:#000;color:#003f93;opacity:.9}.ampstart-dropdown-item:active,.ampstart-dropdown-item:hover{opacity:1}.ampstart-footer{background-color:#fff;color:#000;padding-top:5rem;padding-bottom:5rem}.ampstart-footer .ampstart-icon{fill:#000}.ampstart-footer .ampstart-social-follow li:last-child{margin-right:0}.ampstart-image-fullpage-hero{color:#fff}.ampstart-fullpage-hero-heading-text,.ampstart-image-fullpage-hero .ampstart-image-credit{-webkit-box-decoration-break:clone;box-decoration-break:clone;background:#000;padding:0 1rem .2rem}.ampstart-image-fullpage-hero>amp-img{max-height:calc(100vh - 3.5rem)}.ampstart-image-fullpage-hero>amp-img img{-o-object-fit:cover;object-fit:cover}.ampstart-fullpage-hero-heading{line-height:3.5rem}.ampstart-fullpage-hero-cta{background:transparent}.ampstart-readmore{background:linear-gradient(0deg,rgba(0,0,0,.65) 0,transparent);color:#fff;margin-top:5rem;padding-bottom:3.5rem}.ampstart-readmore:after{display:block;content:"⌄";font-size:2rem}.ampstart-readmore-text{background:#000}@media (min-width:52.06rem){.ampstart-image-fullpage-hero>amp-img{height:60vh}}.ampstart-image-heading{color:#fff;background:linear-gradient(0deg,rgba(0,0,0,.65) 0,transparent)}.ampstart-image-heading>*{margin:0}amp-carousel .ampstart-image-with-heading{margin-bottom:0}.ampstart-image-with-caption figcaption{color:#4f4f4f;line-height:1.125rem}amp-carousel .ampstart-image-with-caption{margin-bottom:0}.ampstart-input{max-width:100%;width:300px;min-width:100px;font-size:1rem;line-height:1.5rem}.ampstart-input [disabled],.ampstart-input [disabled]+label{opacity:.5}.ampstart-input [disabled]:focus{outline:0}.ampstart-input>input,.ampstart-input>select,.ampstart-input>textarea{width:100%;margin-top:1rem;line-height:1.5rem;border:0;border-radius:0;border-bottom:1px solid #4a4a4a;background:none;color:#4a4a4a;outline:0}.ampstart-input>label{color:#003f93;pointer-events:none;text-align:left;font-size:.875rem;line-height:1rem;opacity:0;animation:.2s;animation-timing-function:cubic-bezier(.4,0,.2,1);animation-fill-mode:forwards}.ampstart-input>input:focus,.ampstart-input>select:focus,.ampstart-input>textarea:focus{outline:0}.ampstart-input>input:focus:-ms-input-placeholder,.ampstart-input>select:focus:-ms-input-placeholder,.ampstart-input>textarea:focus:-ms-input-placeholder{color:transparent}.ampstart-input>input:focus::placeholder,.ampstart-input>select:focus::placeholder,.ampstart-input>textarea:focus::placeholder{color:transparent}.ampstart-input>input:not(:placeholder-shown):not([disabled])+label,.ampstart-input>select:not(:placeholder-shown):not([disabled])+label,.ampstart-input>textarea:not(:placeholder-shown):not([disabled])+label{opacity:1}.ampstart-input>input:focus+label,.ampstart-input>select:focus+label,.ampstart-input>textarea:focus+label{animation-name:a}@keyframes a{to{opacity:1}}.ampstart-input>label:after{content:"";height:2px;position:absolute;bottom:0;left:45%;background:#003f93;transition:.2s;transition-timing-function:cubic-bezier(.4,0,.2,1);visibility:hidden;width:10px}.ampstart-input>input:focus+label:after,.ampstart-input>select:focus+label:after,.ampstart-input>textarea:focus+label:after{left:0;width:100%;visibility:visible}.ampstart-input>input[type=search]{-webkit-appearance:none;-moz-appearance:none;appearance:none}.ampstart-input>input[type=range]{border-bottom:0}.ampstart-input>input[type=range]+label:after{display:none}.ampstart-input>select{-webkit-appearance:none;-moz-appearance:none;appearance:none}.ampstart-input>select+label:before{content:"⌄";line-height:1.5rem;position:absolute;right:5px;zoom:2;top:0;bottom:0;color:#003f93}.ampstart-input-chk,.ampstart-input-radio{width:auto;color:#4a4a4a}.ampstart-input input[type=checkbox],.ampstart-input input[type=radio]{margin-top:0;-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border:1px solid #003f93;vertical-align:middle;margin-right:.5rem;text-align:center}.ampstart-input input[type=radio]{border-radius:20px}.ampstart-input input[type=checkbox]:not([disabled])+label,.ampstart-input input[type=radio]:not([disabled])+label{pointer-events:auto;animation:none;vertical-align:middle;opacity:1;cursor:pointer}.ampstart-input input[type=checkbox]+label:after,.ampstart-input input[type=radio]+label:after{display:none}.ampstart-input input[type=checkbox]:after,.ampstart-input input[type=radio]:after{position:absolute;top:0;left:0;bottom:0;right:0;content:" ";line-height:1.4rem;vertical-align:middle;text-align:center;background-color:#fff}.ampstart-input input[type=checkbox]:checked:after{background-color:#003f93;color:#fff;content:"✓"}.ampstart-input input[type=radio]:checked{background-color:#fff}.ampstart-input input[type=radio]:after{top:3px;bottom:3px;left:3px;right:3px;border-radius:12px}.ampstart-input input[type=radio]:checked:after{content:"";font-size:3rem;background-color:#003f93}.ampstart-input>label,_:-ms-lang(x){opacity:1}.ampstart-input>input:-ms-input-placeholder,_:-ms-lang(x){color:transparent}.ampstart-input>input::placeholder,_:-ms-lang(x){color:transparent}.ampstart-input>input::-ms-input-placeholder,_:-ms-lang(x){color:transparent}.ampstart-input>select::-ms-expand{display:none}.ampstart-headerbar{background-color:#fff;color:#000;z-index:999;box-shadow:0 0 5px 2px rgba(0,0,0,.1)}.ampstart-headerbar+:not(amp-sidebar),.ampstart-headerbar+amp-sidebar+*{margin-top:3.5rem}.ampstart-headerbar-nav .ampstart-nav-item{padding:0 1rem;background:transparent;opacity:.8}.ampstart-headerbar-nav{line-height:3.5rem}.ampstart-nav-item:active,.ampstart-nav-item:focus,.ampstart-nav-item:hover{opacity:1}.ampstart-navbar-trigger:focus{outline:none}.ampstart-nav a,.ampstart-navbar-trigger,.ampstart-sidebar-faq a{cursor:pointer;text-decoration:none}.ampstart-nav .ampstart-label{color:inherit}.ampstart-navbar-trigger{line-height:3.5rem;font-size:2rem}.ampstart-headerbar-nav{-ms-flex:1;flex:1}.ampstart-nav-search{-ms-flex-positive:0.5;flex-grow:0.5}.ampstart-headerbar .ampstart-nav-search:active,.ampstart-headerbar .ampstart-nav-search:focus,.ampstart-headerbar .ampstart-nav-search:hover{box-shadow:none}.ampstart-nav-search>input{border:none;border-radius:3px;line-height:normal}.ampstart-nav-dropdown{min-width:200px}.ampstart-nav-dropdown amp-accordion header{background-color:#fff;border:none}.ampstart-nav-dropdown amp-accordion ul{background-color:#fff}.ampstart-nav-dropdown .ampstart-dropdown-item,.ampstart-nav-dropdown .ampstart-dropdown>section>header{background-color:#fff;color:#000}.ampstart-nav-dropdown .ampstart-dropdown-item{color:#003f93}.ampstart-sidebar{background-color:#fff;color:#000;min-width:300px;width:300px}.ampstart-sidebar .ampstart-icon{fill:#003f93}.ampstart-sidebar-header{line-height:3.5rem;min-height:3.5rem}.ampstart-sidebar .ampstart-dropdown-item,.ampstart-sidebar .ampstart-dropdown header,.ampstart-sidebar .ampstart-faq-item,.ampstart-sidebar .ampstart-nav-item,.ampstart-sidebar .ampstart-social-follow{margin:0 0 2rem}.ampstart-sidebar .ampstart-nav-dropdown{margin:0}.ampstart-sidebar .ampstart-navbar-trigger{line-height:inherit}.ampstart-navbar-trigger svg{pointer-events:none}.ampstart-related-article-section{border-color:#4a4a4a}.ampstart-related-article-section .ampstart-heading{color:#4a4a4a;font-weight:400}.ampstart-related-article-readmore{color:#000;letter-spacing:0}.ampstart-related-section-items>li{border-bottom:1px solid #4a4a4a}.ampstart-related-section-items>li:last-child{border:none}.ampstart-related-section-items .ampstart-image-with-caption{display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-align:center;align-items:center;margin-bottom:0}.ampstart-related-section-items .ampstart-image-with-caption>amp-img,.ampstart-related-section-items .ampstart-image-with-caption>figcaption{-ms-flex:1;flex:1}.ampstart-related-section-items .ampstart-image-with-caption>figcaption{padding-left:1rem}@media (min-width:40.06rem){.ampstart-related-section-items>li{border:none}.ampstart-related-section-items .ampstart-image-with-caption>figcaption{padding:1rem 0}.ampstart-related-section-items .ampstart-image-with-caption>amp-img,.ampstart-related-section-items .ampstart-image-with-caption>figcaption{-ms-flex-preferred-size:100%;flex-basis:100%}}.ampstart-social-box{display:-ms-flexbox;display:flex}.ampstart-social-box>amp-social-share{background-color:#000}.ampstart-icon{fill:#003f93}.ampstart-input{width:100%}main .ampstart-social-follow{margin-left:auto;margin-right:auto;width:315px}main .ampstart-social-follow li{transform:scale(1.8)}h1+.ampstart-byline time{font-size:0.9rem;font-weight:400}
Genel Onların Da Korktuğu Bir Canlı Var 20 Nisan 2019 00:01
Büyük beyaz köpek balıklarının 6 metrelik boyları ve 1.7 tona ulaşan ağırlıklarıyla okyanusların en büyük canlılarından olduğunu hepimiz biliriz.
Bilim insanları, bu devasa canlıların hayatlarının nasıl olduğunu araştırırken ilginç bir sonuca ulaştılar. Köpek balıklarını fazlasıyla korkutan, karşılaştıkları bölgeyi hemen terk edip bir sene boyunca bir daha oraya gelmemelerine neden olan bir canlı türüne denk gelindi: Katil balinalar. Amerika'da bulunan Monterey Körfezi Akvaryumu yakınlarında yapılan araştırmalar, toplam 27 yıl sürdü. Bu uzunca süre boyunca beyaz köpek balıkları, foklar ve katil balinaların davranışları incelendi. Avlanma davranışlarında ise beyaz köpek balıklarının hiçbir zaman zaman katil balinalar ile rekabet etmediği sonucuna varıldı. Bilindiği üzere katil balinalar, okyanusların tümünde bulanan en yırtıcı memelilerdir. Boyutları 5 ile 8 metre arasında değişen ve 5.5 ton ağırlığa sahip olan bu canlıların, beyaz köpek balıkları tarafından okyanusun kralları olarak nitelendirilmiş durumda. Öyle ki katil balinalarla karşılaşacak beyaz köpek balıkları sadece peşinde olduğu avı bırakmıyor, uzunca bir süre boyunca da aynı yere dönmüyor. Beyaz köpek balıklarının bölgeden bir yıl boyunca uzak kaldığını belirtti. 27 yıl süren araştırmalarda deniz canlıları etiketlendi. Bu sayede sonuca ulaştıklarını belirten Jorsengen, kara üzerinde etkileşimlerin nasıl olduğunu takip etmenin daha kolay olduğunu ancak bunu okyanus ortamında belgelemenin daha zor olduğunu belirterek, bu olayın neden kaynaklandığını anlamanın uzun sürebileceğini belirtti.