{"id":7554,"date":"2026-08-07T16:34:35","date_gmt":"2026-08-07T15:34:35","guid":{"rendered":"https:\/\/www.swoop-antarctica.com\/blog\/?p=7554"},"modified":"2026-08-11T13:29:50","modified_gmt":"2026-08-11T12:29:50","slug":"krill-antarctic-marine-protected-area","status":"publish","type":"post","link":"https:\/\/www.swoop-antarctica.com\/blog\/krill-antarctic-marine-protected-area\/","title":{"rendered":"Krill fishing in Antarctica and the fight to protect the Southern Ocean"},"content":{"rendered":"\n<p>August 11 is a big day in the Antarctic calendar because it\u2019s World Krill Day. It\u2019s the one day of the year where we turn our attention from all our charismatic favourites like penguins and humpback whales, and we focus our attention on the tiny creatures without whom the Southern Ocean would be an empty place: krill.&nbsp;<\/p>\n\n\n\n<p>Without this humble crustacean, which swarms in vast numbers in the polar seas, the entire Antarctic ecosystem as we know it wouldn\u2019t exist. Krill eat the phytoplankton that blooms in Antarctic waters, helping <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/antarctica-secret-climate-champion-krill\/\">capture and store atmospheric carbon<\/a>, and providing food for fish, penguins, seals and whales. They&#8217;re the<a href=\"https:\/\/www.swoop-antarctica.com\/blog\/why-krill-is-the-most-important-antarctic-animal-youll-never-see\/\"> most important Antarctic animal you\u2019ll never see<\/a>. But humans are taking in increased commercial interest in krill, which are being fished in ever-growing numbers in Antarctica. To learn more about efforts to manage the fishery and protect Antarctic waters, we spoke to Dr Rodolfo Werner, a consultant with the Minderoo Foundation and Antarctic and Southern Ocean Coalition (ASOC), as well as science advisor and board member of the Antarctic Wildlife Research Fund, who has been working on krill for over two decades.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why fish for krill?<\/h2>\n\n\n\n<p>The Antarctic krill, also known as <em>Euphausia superba<\/em>, grows to about the length of an adult\u2019s finger, making it the perfect size to be <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/penguin-species-in-antarctica\/\">eaten by penguins<\/a> or scooped up in huge quantities by whales. It was until the 1960s during the heyday of industrial whaling, that people started thinking of establishing a <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/is-commercial-krill-fishing-a-danger-to-antarcticas-whales\/\">krill fishery.<\/a> The Soviet Union, which was one of the largest whaling nations, sent subsidised fleets to operate in East Antarctica, working on the hypothesis that the commercial exploitation of whales might have produced a \u2018surplus\u2019 krill population as a result.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" src=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Tourist-looking-at-krill-1024x731.jpeg\" alt=\"\" class=\"wp-image-7576\" srcset=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Tourist-looking-at-krill-1024x731.jpeg 1024w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Tourist-looking-at-krill-300x214.jpeg 300w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Tourist-looking-at-krill-768x548.jpeg 768w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Tourist-looking-at-krill.jpeg 1063w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Examining krill in Antarctica<\/figcaption><\/figure>\n\n\n\n<p>Within a decade, Japan also established its own krill fleet, and the fishery eventually moved towards the patch of the Southern Ocean lying between <a href=\"https:\/\/www.swoop-antarctica.com\/cruises\/south-georgia\">South Georgia<\/a> and the Antarctic Peninsula where krill was more abundant. The krill weren\u2019t fished for direct human consumption, and still aren\u2019t. They were harvested to make aquaculture feed for farmers&nbsp; or to make pet food. In more recent years, krill oil has become more important. Thanks to its night levels of Omega-3 fatty acids, Antarctic krill oil is now increasingly marketed as a human health supplement.<\/p>\n\n\n\n<p>\u2018After some years, scientists studying krill were worried that we weren\u2019t managing the fishery,\u2019 explains Dr Werner. \u2018This was the first step to start the discussions that led to the creation of the <a href=\"https:\/\/www.asoc.org\/learn\/introducing-ccamlr\/\" target=\"_blank\" rel=\"noreferrer noopener\">Commission for the Conservation of Antarctic Marine Living Resources<\/a> (CCAMLR), which is also sometimes called the Krill Convention.\u2019 CCAMLR (pronounced to rhyme with <em>Pamela<\/em>) was the first international convention to attempt to manage the krill fishery, says Werner, that it came into effect on April 7, 1982 on the day of his birthday.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How krill fishing is managed<\/h2>\n\n\n\n<p>As its name suggests, CCAMLR put conservation at the heart of what it was about. \u2018It was very novel when it was established because it had two principles: ecosystem-based management and the precautionary principle.\u2019 This was a world away from the brutal tragedy of the commons that was industrial whaling. At that time, a maximum catch limit was also established for Antarctic waters. The idea was to ensure that the fishery could be fully sustainable, with no potential to damage local ecosystems by over-exploiting a particular location.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" src=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-1024x731.jpg\" alt=\"\" class=\"wp-image-7569\" srcset=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-1024x731.jpg 1024w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-300x214.jpg 300w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-768x548.jpg 768w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-1536x1097.jpg 1536w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-2048x1463.jpg 2048w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-1200x857.jpg 1200w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Roldofo-Werner-in-Antarctica-1980x1414.jpg 1980w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Dr Rodolfo Werner in Antarctica (Image: Rodolfo Werner)<\/figcaption><\/figure>\n\n\n\n<p>In the early years of CCAMLR, the idea that krill could even be overfished seemed like a distant prospect. The break-up of the Soviet Union led to the collapse of the krill fishery. \u2018When I started working with krill in 2003, the fishery was taking less than 100,000 tonnes of krill a year,\u2019 says Werner. \u2018The catch limit was six times that at 620,000 tonnes, which is still the maximum catch limit today.\u2019 The number represents around 1% of the estimated krill population in that area of Antarctica.<\/p>\n\n\n\n<p>In 2025, that catch limit was reached for the first time, triggering the complete closure of the krill fishery.&nbsp; The 620,000 tonnes were taken by traditional trawlers and the so called super trawlers with immense vacuum-equipped nets, operating along the northern part of <a href=\"https:\/\/www.swoop-antarctica.com\/cruises\/peninsula\">Antarctic Peninsula<\/a>: an area that\u2019s a key foraging ground for penguins and whales, as well as being the main destination for Antarctic tourism. Due to the concentrated fishing pattern, the concern has always been always about the reduction of krill availability in certain areas that are key for predators.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The threat of overfishing krill&nbsp;<\/h2>\n\n\n\n<p>The problem arises through the recent lapse of one of CCAMLR\u2019s key instruments. Conservation Measure 51-07 was established in 2009 to distribute annual krill catches between four areas \u2014 the Antarctic Peninsula, South Orkneys, South Georgia and the South Sandwich Islands \u2014 to ensure that the krill never ran the risk of being overfished in any one area. \u2018We agreed to this measure in 2009 in order to split the catches, reducing the possibility of krill fishing concentrating in one particular area. The fishery normally moves, starting in the South Orkneys in the summer and then moving to the Antarctic Peninsula. But some years it\u2019s more challenging to fish in the South Orkneys because of the sea ice, so they\u2019ll move earlier to the Peninsula. Then by the middle of the season they\u2019ll reach the maximum for that area and move on again,\u2019 says Werner. \u2019But if catches reach the maximum, then the fishery will be closed.\u2019<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" src=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-1024x731.jpg\" alt=\"\" class=\"wp-image-7568\" srcset=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-1024x731.jpg 1024w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-300x214.jpg 300w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-768x548.jpg 768w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-1536x1097.jpg 1536w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-2048x1463.jpg 2048w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-1200x857.jpg 1200w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-fishing-trawler-Image-Rodolfo-Werner-1980x1414.jpg 1980w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">A krill trawler in Antarctica (Image: Rodolfo Werner)<\/figcaption><\/figure>\n\n\n\n<p>\u2018CM 51-07 was an interim measure that was supposed to be extended every year or two depending on what was agreed. But what happened in 2024 was that China blocked its extension. As a result, we\u2019ve gone back to the situation where you can fish 620,000 tonnes of krill wherever you want and whenever you want.\u2019 The result of this is that krill catches in the Antarctic Peninsula doubled in the 2024\/25 season. This took place exactly at the time of the season when penguins are foraging to feed their chicks while <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/how-scientists-are-revealing-the-secret-world-of-antarcticas-humpback-whales\/\">whales gorge themselves on krill<\/a> to regain body mass after a winter spent fasting in warmer waters.<\/p>\n\n\n\n<p>\u2018This is what has always been our concern \u2013 concentrated fishing and the potential depletion of krill in certain areas,\u2019 says Werner. \u2018This isn\u2019t just along the Peninsula but also in the South Orkneys where the fishery operates in very concentrated places where we&#8217;re seeing <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/antarcticas-fin-whales-are-their-numbers-finally-in-recovery\/\">large aggregations of fin whales<\/a>. That\u2019s the reason why we&#8217;re trying to establish catch limits at a smaller scale.&nbsp; In addition to that, monitoring will be key so as to check how krill predators are doing in those areas. We can best do this with the penguin colonies because they\u2019re the easiest to monitor \u2013 and if things aren\u2019t going right then we can change the fishery management.\u2019<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A Marine Protected Area for the Antarctic Peninsula?<\/h2>\n\n\n\n<p>The biggest opportunity for conservation would be the establishment of a Marine Protected Area (MPA) along the Antarctic Peninsula. In 2016, CCAMLR voted unanimously to do exactly that for the <a href=\"https:\/\/www.swoop-antarctica.com\/cruises\/ross-sea\">Ross Sea<\/a> region. At the stroke of a pen, this became the largest protected stretch of ocean in the world, covering an area of just over 2 million square kilometres, or more than three times the size of California. No krill is fished there, although there is an area where research krill fishing could take place. After 6 years of preparation, in 2018 the governments of Argentina and Chile presented a proposal for an MPA in the area what is called Domain One, covering the Antarctic Peninsula and the South Orkney Islands. The idea has yet to be accepted by the CCAMLR Commission.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"732\" src=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-1024x732.jpg\" alt=\"\" class=\"wp-image-7523\" srcset=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-1024x732.jpg 1024w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-300x214.jpg 300w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-768x549.jpg 768w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-1536x1097.jpg 1536w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-1200x857.jpg 1200w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica-1980x1415.jpg 1980w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/07\/Humpback-whales-feeding-on-krill-in-Antarctica.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Humpback whales showing the baleen plates used to filter krill<\/figcaption><\/figure>\n\n\n\n<p>\u2018In 2024, there was a proposal to bring the development and management of the fishery and the creation of the MPA into a single plan,\u2019 says Werner. Unfortunately, the discussion at the CCAMLR meeting went badly, and in the end, China blocked any further progress. Further complications are added by the Russian war in Ukraine, as both are also CCAMLR members. For the time being, the plans for both the MPA and managing the catch limits are on hold.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Despite this, as a veteran of these diplomatic wranglings, Werner refuses to be pessimistic. \u2018We hope we\u2019ll see some action at the forthcoming CCAMLR meeting in October this year.<\/p>\n\n\n\n<p>\u2018The question is whether China is really interested in going over the trigger limit this year?\u2019 he says, referring to the current catch limit. Any proposal to increase the krill catch over the magic number of 620,000 tonnes will automatically trigger the division of that catch into smaller scale units, as agreed by CCAMLR many years ago. What\u2019s more, there would be further limits for summer and winter fishing. \u2018With that, you&#8217;re reducing the risk of fishing in a very concentrated way,\u2019 as well as reducing any possible ecosystem impacts.<\/p>\n\n\n\n<p>CCAMLR, he reminds me, works on consensus. \u2018Argentina and Chile, who developed the proposal for the MPA in the Antarctica Peninsula might not allow an increase in the krill fishery unless the MPA is established.\u2019&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" src=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-1024x731.jpg\" alt=\"\" class=\"wp-image-7567\" srcset=\"https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-1024x731.jpg 1024w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-300x214.jpg 300w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-768x548.jpg 768w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-1536x1097.jpg 1536w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-2048x1463.jpg 2048w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-1200x857.jpg 1200w, https:\/\/www.swoop-antarctica.com\/blog\/wp-content\/uploads\/2026\/08\/Antarctic-krill-Image-Rodolfo-Werner-1980x1414.jpg 1980w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Antarctic krill (Image: Rodolfo Werner)<\/figcaption><\/figure>\n\n\n\n<p>Where does this leave the poor krill? The wheels of international diplomacy often turn very slowly, but despite the increase in the krill fishery, the Antarctic Peninsula is also home to one of the most optimistic conservation stories of modern times. When CCAMLR was set up in the early 1980s, factory ships still plied polar waters hunting whales to the brink of extinction. In the four decades since the moratorium on whaling, the global population of humpback whales has recovered to over 90% of its pre-whaling numbers \u2013 and the Antarctic Peninsula has become one of the <a href=\"https:\/\/www.swoop-antarctica.com\/blog\/the-5-whales-species-in-antarctica-and-how-to-see-them\/\">world\u2019s best whale-watching destinations<\/a>.&nbsp;<\/p>\n\n\n\n<p>It took a long time for the world to wake up to the threat to whales, but scientists and conservationists are already in the corner fighting for krill, just as their importance in the Antarctic ecosystem is becoming better known to the world at large.&nbsp;<\/p>\n\n\n\n<p class=\"has-text-align-center\">*<\/p>\n","protected":false},"excerpt":{"rendered":"<p>August 11 is a big day in the Antarctic calendar because it\u2019s World Krill Day. It\u2019s the one day of the year where we turn our attention from all our charismatic favourites like penguins and humpback whales, and we focus our attention on the tiny creatures without whom the Southern Ocean would be an empty [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":7567,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[70],"tags":[96,106,132],"class_list":["post-7554","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stories-and-inspiration","tag-interview","tag-krill","tag-sustainability"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Krill fishing in Antarctica and the fight to protect the Southern Ocean - Swoop Antarctica Blog<\/title>\n<meta name=\"description\" content=\"Krill fishing is an increasing environmental concern in Antarctica. 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