{"id":20057,"date":"2026-02-18T10:06:25","date_gmt":"2026-02-18T10:06:25","guid":{"rendered":"https:\/\/readtrends.com\/en\/antarctica-sleeper-shark\/"},"modified":"2026-02-18T10:06:25","modified_gmt":"2026-02-18T10:06:25","slug":"antarctica-sleeper-shark","status":"publish","type":"post","link":"https:\/\/readtrends.com\/en\/antarctica-sleeper-shark\/","title":{"rendered":"Sleeper shark filmed for first time in Antarctica\u2019s near\u2011freezing deep"},"content":{"rendered":"<article>\n<h2>Lead<\/h2>\n<p>In January 2025, researchers from the Minderoo\u2011UWA Deep\u2011Sea Research Centre captured video of a large sleeper shark off the South Shetland Islands near the Antarctic Peninsula. The animal, estimated at 3\u20134 meters (10\u201313 feet) long, was recorded at roughly 490 meters (1,608 feet) where water temperature measured 1.27\u00b0C (34.29\u00b0F). Scientists say this is the first documented shark observed so far south in the Antarctic Ocean (south of 60\u00b0S). The centre granted The Associated Press permission to publish the footage, drawing attention to an unexpected deep\u2011sea presence.<\/p>\n<h2>Key Takeaways<\/h2>\n<ul>\n<li>The shark was filmed in January 2025 off the South Shetland Islands, within the Southern Ocean below 60\u00b0S.<\/li>\n<li>The specimen is estimated at 3\u20134 meters (10\u201313 feet) long and was recorded at about 490 meters (1,608 feet) depth.<\/li>\n<li>Water temperature at the sighting depth was 1.27\u00b0C (34.29\u00b0F), a near\u2011freezing layer identified as relatively warm within local stratification.<\/li>\n<li>Researchers report no prior verified shark records that far south in the Antarctic Ocean.<\/li>\n<li>A skate, known to range that far south, was visible and appeared undisturbed by the passing shark.<\/li>\n<li>Deep cameras at the specific 400\u2013600 meter window are scarce and typically operate only during the austral summer (December\u2013February).<\/li>\n<\/ul>\n<h2>Background<\/h2>\n<p>Antarctic waters have long been considered too cold and isolated for most shark species, and past surveys returned no confirmed shark records inside the defined Southern Ocean boundary below 60\u00b0S. The Minderoo\u2011UWA Deep\u2011Sea Research Centre, a joint initiative studying abyssal life, deploys time\u2011lapse and baited cameras across a range of depths to map otherwise unseen fauna. Southern Ocean hydrography is strongly layered: colder, denser water below and fresher meltwater on top inhibit vertical mixing, creating relatively stable mid\u2011depth layers where organisms can concentrate. Because of the region&#8217;s remoteness and the logistical constraints of Antarctic fieldwork, continuous monitoring at intermediate depths (several hundred meters) is rare, especially outside the austral summer months.<\/p>\n<p>Sleeper sharks are slow\u2011moving deep\u2011water species known from high latitudes in both hemispheres, but their presence in Antarctic waters had not been documented to this latitude before. Researchers and independent biologists note that absence of evidence is not evidence of absence: few long\u2011term observation platforms exist at the depth and latitude where this animal was filmed. The discovery therefore raises questions about range limits, habitat use, and whether existing models of Antarctic deep\u2011sea ecosystems need revision. Institutions conducting Antarctic research often rely on seasonal campaigns, leaving the majority of the year unobserved at many depths.<\/p>\n<h2>Main Event<\/h2>\n<p>The camera system, operated by the Minderoo\u2011UWA Deep\u2011Sea Research Centre, recorded the sleeper shark cruising over a barren seabed at about 490 meters on a sloping bottom that led to deeper water. The shark moved slowly and appeared unhurried, consistent with known sleeper shark behavior, before moving out of frame after a brief encounter. A skate was visible on the seafloor and did not react noticeably to the shark&#8217;s passage, underscoring that some benthic species are accustomed to occasional large scavengers or predators in the zona. Researchers estimated the shark&#8217;s length visually at 3\u20134 meters (10\u201313 feet), describing it as substantial compared with more modest deep\u2011sea fauna.<\/p>\n<p>Alan Jamieson, founding director of the Minderoo\u2011UWA centre, said a search of the literature and sightings databases turned up no prior verified shark records that far south, making the footage novel in geographic terms. The team noted the animal was occupying a mid\u2011depth layer that, locally, represented the warmest of several stratified strata from the seabed upward. The camera deployment was part of a seasonal effort to sample deep\u2011sea life during the Southern Hemisphere summer, a window when equipment can be operated and recovered safely. After reviewing the footage, the research centre gave The Associated Press permission to share the images, drawing international attention.<\/p>\n<h2>Analysis &#038; Implications<\/h2>\n<p>The sighting forces a re\u2011examination of assumptions about the Southern Ocean&#8217;s capacity to host large elasmobranchs. If sleeper sharks are able to occupy a narrow mid\u2011depth thermal layer, that mechanism could allow them to persist in waters that are surface\u2011frozen and cold. However, one recorded individual does not by itself map a population or confirm regular residency; researchers must treat the observation as a data point prompting targeted surveys. The discovery highlights a broader observational gap: most of the year and many depth bands around Antarctica are rarely sampled, creating blind spots for range and biodiversity assessments.<\/p>\n<p>From an ecological perspective, a large deep\u2011water scavenger could play a role in carcass processing and nutrient redistribution on the Antarctic seabed, consuming whale falls, squid remains, and other large food falls. Jamieson suggested that sleeper sharks in the region might scavenge whale carcasses and other large organic inputs that sink to the abyss, but direct diet data from specimens or stomach contents will be needed to confirm such behavior. For conservation and management, the finding illustrates how little is known about deep\u2011sea life in polar regions and why baseline data are essential if climate\u2011driven range shifts accelerate.<\/p>\n<p>Policy and scientific planning should account for detection biases: current Antarctic sampling favors surface and shallow benthic surveys, whereas this sighting came from a mid\u2011depth window often overlooked. If climate change is altering temperature profiles or prey distributions, species may adjust depth and latitude, with knock\u2011on effects for fisheries, protected area design, and ecosystem function. Still, robust, repeated observations and specimen data are required before revising distribution maps or management measures.<\/p>\n<h2>Comparison &#038; Data<\/h2>\n<figure>\n<table>\n<thead>\n<tr>\n<th>Measure<\/th>\n<th>This Sighting<\/th>\n<th>Context \/ Typical Record<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Depth<\/td>\n<td>~490 m (1,608 ft)<\/td>\n<td>Observations at this mid\u2011depth window are rare in Antarctic surveys<\/td>\n<\/tr>\n<tr>\n<td>Water temperature<\/td>\n<td>1.27\u00b0C (34.29\u00b0F)<\/td>\n<td>Near\u2011freezing surface waters are common; mid\u2011depth thermal layers can be relatively warmer<\/td>\n<\/tr>\n<tr>\n<td>Estimated length<\/td>\n<td>3\u20134 m (10\u201313 ft)<\/td>\n<td>Large for deep\u2011sea predators at high latitudes; sleeper sharks can reach similar sizes elsewhere<\/td>\n<\/tr>\n<tr>\n<td>Latitude<\/td>\n<td>South Shetland Islands, inside Southern Ocean (below 60\u00b0S)<\/td>\n<td>No prior verified shark records this far south, per authors<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>The table summarizes the concrete measurements from the January 2025 recording and places them against the limited baseline for Antarctic mid\u2011depth observations. The sighting sits in a depth band (roughly 400\u2013600 m) that is underobserved outside short summer campaigns; stratification of the water column means that local mid\u2011depths can be biologically distinct from both near\u2011surface and abyssal layers. Without repeated deployments and complementary sampling (e.g., baited rigs, trawls, environmental DNA), it is not possible to estimate local abundance, seasonal movement, or trophic links conclusively.<\/p>\n<h2>Reactions &#038; Quotes<\/h2>\n<blockquote>\n<p>&#8220;We went down there not expecting to see sharks,&#8221;<\/p>\n<p><cite>Alan Jamieson, Minderoo\u2011UWA Deep\u2011Sea Research Centre (founding director)<\/cite><\/p><\/blockquote>\n<p>Jamieson emphasized the surprise element: the deployment targeted biodiversity documentation at depth rather than a specific search for sharks. He described the animal as large and robust relative to many deep\u2011sea fishes.<\/p>\n<blockquote>\n<p>&#8220;It&#8217;s not even a little one either. It&#8217;s a hunk of a shark,&#8221;<\/p>\n<p><cite>Alan Jamieson<\/cite><\/p><\/blockquote>\n<p>That concise observation underlined the physical scale of the specimen and why the footage attracted scientific attention beyond routine deep\u2011sea survey results.<\/p>\n<blockquote>\n<p>&#8220;It&#8217;s quite significant,&#8221;<\/p>\n<p><cite>Peter Kyne, Charles Darwin University (conservation biologist)<\/cite><\/p><\/blockquote>\n<p>Kyne, speaking independently of the Minderoo\u2011UWA team, agreed the record is notable given the absence of prior verified shark sightings so far south.<\/p>\n<aside>\n<details>\n<summary>Explainer: sleeper sharks, stratification, and deep\u2011sea cameras<\/summary>\n<p>Sleeper sharks (members of family Somniosidae) are slow\u2011moving elasmobranchs adapted to deep, cold waters; some species grow several meters long and are typically scavengers or slow predators. The Southern Ocean is strongly stratified: surface waters cooled by ice melt sit above denser, colder deep water, and the resulting layers can create mid\u2011depth thermal niches. Time\u2011lapse and baited cameras are common tools to document deep\u2011sea megafauna; deployments are limited by ship time, weather, and ice conditions in polar regions, so many depths and seasons remain sparsely sampled. Environmental DNA (eDNA) and repeat camera stations are increasingly used to detect elusive or rare taxa without needing immediate physical capture.<\/p>\n<\/details>\n<\/aside>\n<h2>Unconfirmed<\/h2>\n<ul>\n<li>Whether regional warming from climate change is already driving sharks farther south remains unconfirmed; current data are insufficient to attribute this single sighting to long\u2011term range shifts.<\/li>\n<li>Whether sleeper sharks have long been present but undetected at Antarctic mid\u2011depths is plausible but not proven without additional observations or specimen records.<\/li>\n<li>The size of any local sleeper shark population and its ecological role (e.g., reliance on whale fall scavenging) is hypothesized by researchers but lacks direct confirmation from diet or abundance studies.<\/li>\n<\/ul>\n<h2>Bottom Line<\/h2>\n<p>The January 2025 video of a 3\u20134 meter sleeper shark at about 490 meters off the South Shetland Islands provides a verifiable data point that challenges assumptions about shark absence in the high Southern Ocean. While the record does not by itself prove a range expansion, it does demonstrate that sizable elasmobranchs can occupy mid\u2011depth thermal layers near Antarctica and that these layers are underobserved. The finding underscores the need for targeted, seasonally broad monitoring\u2014using cameras, eDNA, and occasional specimen collection\u2014to map true species distributions and detect changes over time.<\/p>\n<p>For scientists and policymakers, the priority is to convert surprise observations into systematic data: repeat deployments at the 400\u2013600 meter window, coordinated multi\u2011year surveys, and integration of visual records with genetic and trophic studies. Until such work is done, this sighting should be treated as an important but solitary piece of evidence that expands our understanding of deep\u2011sea life at the edge of the world.<\/p>\n<h2>Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/apnews.com\/article\/australia-antarctic-sleeper-shark-38e8c18f0dc23b3cda4970bf2474fbaf\" target=\"_blank\" rel=\"noopener\">Associated Press<\/a> \u2014 news report summarizing the Minderoo\u2011UWA footage and researcher comments (journalism).<\/li>\n<li><a href=\"https:\/\/www.minderoo.org\/marine\/minderoo-uwa-deep-sea-research-centre\/\" target=\"_blank\" rel=\"noopener\">Minderoo\u2011UWA Deep\u2011Sea Research Centre<\/a> \u2014 research centre coordinating the camera deployments (official research institute).<\/li>\n<li><a href=\"https:\/\/www.cdu.edu.au\" target=\"_blank\" rel=\"noopener\">Charles Darwin University<\/a> \u2014 academic institution and home of conservation biologist Peter Kyne who commented on the record (academic comment).<\/li>\n<\/ul>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Lead In January 2025, researchers from the Minderoo\u2011UWA Deep\u2011Sea Research Centre captured video of a large sleeper shark off the South Shetland Islands near the Antarctic Peninsula. The animal, estimated at 3\u20134 meters (10\u201313 feet) long, was recorded at roughly 490 meters (1,608 feet) where water temperature measured 1.27\u00b0C (34.29\u00b0F). Scientists say this is the &#8230; <a title=\"Sleeper shark filmed for first time in Antarctica\u2019s near\u2011freezing deep\" class=\"read-more\" href=\"https:\/\/readtrends.com\/en\/antarctica-sleeper-shark\/\" aria-label=\"Read more about Sleeper shark filmed for first time in Antarctica\u2019s near\u2011freezing deep\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":20053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Sleeper shark filmed in Antarctica\u2019s deep | Deep Sea News","rank_math_description":"A 3\u20134m sleeper shark was filmed in January 2025 off the South Shetland Islands at 490m depth and 1.27\u00b0C\u2014the first verified shark sighting that far south, researchers say.","rank_math_focus_keyword":"antarctica, sleeper shark, deep sea, Minderoo-UWA, Alan Jamieson","footnotes":""},"categories":[2],"tags":[],"class_list":["post-20057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-top-stories"],"_links":{"self":[{"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/posts\/20057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/comments?post=20057"}],"version-history":[{"count":0,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/posts\/20057\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/media\/20053"}],"wp:attachment":[{"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/media?parent=20057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/categories?post=20057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/readtrends.com\/en\/wp-json\/wp\/v2\/tags?post=20057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}