{"id":231250,"date":"2022-07-13T17:56:07","date_gmt":"2022-07-13T15:56:07","guid":{"rendered":"https:\/\/www.myza.co.za\/killer-whales-are-hunting-great-white-sharks-in-south-africas-waters\/"},"modified":"2022-07-13T17:56:07","modified_gmt":"2022-07-13T15:56:07","slug":"killer-whales-are-hunting-great-white-sharks-in-south-africas-waters","status":"publish","type":"post","link":"https:\/\/www.myza.co.za\/press\/killer-whales-are-hunting-great-white-sharks-in-south-africas-waters\/","title":{"rendered":"Killer whales are hunting great white sharks in South Africa’s waters"},"content":{"rendered":"

Great white sharks have long been at the top of the food chain in parts of South Africa\u2019s oceans. In their peak winter hunting months, around 1,000 great white sharks a day could be observed off the coast of the Western Cape province. But in 2017, great white shark carcasses began to wash up on beaches at Gansbaai, one of the main sites where the species usually gathered. Some were missing their livers<\/a>. And the numbers of great white sharks in Gansbaai started to drop<\/a>. In fact, they just vanished for up to a year at a time. What was the cause?<\/p>\n

The culprits appear to be a pair of male killer whales, which researchers have named Port and Starboard, that arrived in the area. They have a signature way of tearing open their prey and they favour the nutrient-rich liver. <\/p>\n

<\/p>\n
\"Two<\/div>\n

<\/a>

Port and Starboard.<\/span> David Hurwitz<\/span><\/span> <\/figcaption><\/figure>\n

Though killer whales are known to hunt sharks far from shore elsewhere in the world, this was the first time the carcasses had washed up on a beach and become available for scientific study.<\/p>\n

In today\u2019s episode of Pasha, shark biologist and PhD candidate Alison Towner tells the unfolding story of the impact the killer whales are having on South Africa\u2019s marine ecosystems. Great white sharks are fleeing to other parts of the coast and their absence affects other species like African penguins and Cape fur seals<\/a>.<\/p>\n

<\/p>\n
\"Great<\/div>\n

<\/a>

<\/span> Tami Kaschke, Dyer Island Conservation Trust<\/span><\/span> <\/figcaption><\/figure>\n

It\u2019s a novel situation, with concerns for the tourism<\/a> and conservation<\/a> sectors \u2013 and no simple answers.<\/p>\n

\n

Photo<\/strong>
\n\u201cGreat white shark\u201d by Mogens Trolle, found on Shutterstock<\/a>.<\/p>\n

Music<\/strong>
\n\u201cHappy African Village\u201d by John Bartmann, found on FreeMusicArchive.org<\/a> licensed under CC0 1<\/a>.<\/p>\n

\u201cAfrican Moon\u201d by John Bartmann, found on FreeMusicArchive.org<\/a> licensed under CC0 1<\/a>.<\/p>\n

Sounds<\/strong> \u201corcas (killer whales)\u201d by MBARI_MARS found on Freesound<\/a> licensed under attribution noncommercial 3.0 license<\/a>.<\/p>\n

Source: The Conversation<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Great white sharks have long been at the top of the food chain in parts of South Africa\u2019s oceans. In their peak winter hunting months, around 1,000 great white sharks a day could be observed off the coast of the Western Cape province. But in 2017, great white shark carcasses began to wash up on […]<\/p>\n","protected":false},"author":1,"featured_media":231251,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","ngg_post_thumbnail":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4584],"tags":[3257],"class_list":{"0":"post-231250","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-africa-news-2","8":"tag-mypr","9":"entry"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.myza.co.za\/press\/wp-content\/uploads\/2022\/07\/killer-whales-are-hunting-great-white-sharks-in-south-africas-waters-scaled.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/posts\/231250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/comments?post=231250"}],"version-history":[{"count":0,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/posts\/231250\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/media\/231251"}],"wp:attachment":[{"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/media?parent=231250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/categories?post=231250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.myza.co.za\/press\/wp-json\/wp\/v2\/tags?post=231250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}