{"id":791094,"date":"2026-10-03T22:00:09","date_gmt":"2026-10-03T22:00:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/791094\/"},"modified":"2026-10-03T22:00:09","modified_gmt":"2026-10-03T22:00:09","slug":"whales-on-australias-humpback-highway-are-at-growing-risk-of-injury-from-boat-and-propellor-strikes-whales","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/791094\/","title":{"rendered":"Whales on Australia\u2019s \u2018humpback highway\u2019 are at growing risk of injury from boat and propellor strikes | Whales"},"content":{"rendered":"<p class=\"dcr-1s160rg\">Gruesome images of adult and juvenile humpback whales along Australia\u2019s east coast with slash and gouge injuries from boat and propeller strikes highlight what experts say is a growing problem, as the population booms 60 years after the ban on whaling.<\/p>\n<p class=\"dcr-1s160rg\">Missing tail parts, deep red lacerations and shocking injuries to the spine of a whale calf can be clearly seen on the images, gathered by WWF Australia and shared with the Guardian.<\/p>\n<p class=\"dcr-1s160rg\">One image of fresh and broad cuts on the back of a calf was taken last month in Hervey Bay in Queensland, where many mothers choose to bring their calves for rest and shelter on the long migration down to Antarctica.<\/p>\n<p class=\"dcr-1s160rg\">The atmosphere on the town\u2019s whale-watching boats is often one of heightened excitement and elation, as the majestic mammals come to the surface, says Isabel Taylor, a senior naturalist with the Pacific Whale Foundation\u2019s whale-watching tours.<\/p>\n<p class=\"dcr-1s160rg\">Last month, Taylor saw two mothers with calves come to the surface, but all was not well with one pair.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThe others were very surface active and putting on a show, but this other mum and calf were more reserved,\u201d she says.<\/p>\n<p class=\"dcr-1s160rg\">Clearly visible on the calf\u2019s back were slash marks from a boat propeller. \u201cThe mood on the boat changed a bit,\u201d says Taylor.<\/p>\n<p>This female humpback has become known as \u2018bladerunner\u2019 because of the deep slashes from a propeller blade on her back and tail thought to have been sustained more than 20 years ago. Photograph: oceanspray_photography<\/p>\n<p class=\"dcr-1s160rg\">\u201cWe get people from all over the world and some say it\u2019s the best day of their lives. So to have this on the other end of the spectrum was quite profound.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Another image taken in June by drone off Sydney\u2019s Bondi beach shows a humpback with lacerations and exposed red flesh that appear to have been caused by repeated sweeps of a propeller blade.<\/p>\n<p class=\"dcr-1s160rg\">An image from 2024 shows a female humpback off the coast of southern New South Wales that has become known as \u201cbladerunner\u201d because of a highly distinctive sequence of deep slashes from a propeller blade on her back and tail <a href=\"https:\/\/www.abc.net.au\/news\/2023-08-27\/rare-whale-bladerunner-spotted-nsw\/102781946\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\">thought to have been sustained more than 20 years ago<\/a>.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThese images really bring home the physical and direct impact we\u2019re having on these animals, especially on animals that size,\u201d says Dr Raphael Mayaud, a marine ecologist at Griffith University and a member of an expert group advising the International <a href=\"https:\/\/www.theguardian.com\/environment\/whaling\" data-link-name=\"in body link\" data-component=\"auto-linked-tag\" rel=\"nofollow noopener\" target=\"_blank\">Whaling<\/a> Commission (IWC) on vessel strikes.<\/p>\n<p class=\"dcr-1s160rg\">Rebecca Dunlop, an associate professor and humpback expert at the University of Queensland, says most of the images showed injuries to the back and rear of the whales, \u201csuggesting they are surfacing as the boat propeller goes past and over their back\u201d.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWhen migrating humpbacks travel and surface like clockwork they don\u2019t seem to be able to change their dive and travel behaviour to avoid an intercept pathway \u2013 this could be due to a boat approaching the intercept point at speed where they just don\u2019t have the time to make an avoidance decision,\u201d Dunlop says<\/p>\n<p>Conservation success story<\/p>\n<p class=\"dcr-1s160rg\">The IWC banned humpback whaling in the southern hemisphere in 1963 \u2013 after numbers had already crashed.<\/p>\n<p class=\"dcr-1s160rg\">Soviet whalers continued to hunt them in the Southern Ocean until the early 1970s. Estimates from the 1960s put their numbers off the east coast of Australia at less than 300.<\/p>\n<p>An adult humpback whale with its right fluke chopped off. As populations have increased alongside boating and water recreation, the numbers of vessel strikes have also probably increased, whale experts say. Photograph: Isabel Taylor Pacific Whale Foundation Eco Adventures Australia<\/p>\n<p class=\"dcr-1s160rg\">But as the threat of the harpoon was progressively removed, the population rebounded. One <a href=\"https:\/\/esj-journals.onlinelibrary.wiley.com\/doi\/10.1002\/1438-390X.1014\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\">study based on observations of whales<\/a> suggested that by 2004 the east coast humpbacks numbered 7,800.<\/p>\n<p class=\"dcr-1s160rg\">It is seen by many conservationists as one of the planet\u2019s great wildlife recovery stories.<\/p>\n<p class=\"dcr-1s160rg\">By 2015, their numbers had more than trebled to 25,500. Estimates now suggest between 40,000 and 50,000 whales are migrating up and down the coast each year. Some modelling has suggested numbers will peak and plateau this year.<\/p>\n<p class=\"dcr-1s160rg\">Dunlop and Mayaud both observe that, as populations have increased alongside the rise in popularity of boating and water recreation, the numbers of vessel strikes have also likely increased.<\/p>\n<p>\u2018Humpbacks have been one of the great conservation success stories. But along Australia\u2019s humpback highway, there\u2019s growing risk for them to be hit by vessels,\u2019 says WWF\u2019s Chris Johnson.    Photograph: Tracey Harris<\/p>\n<p class=\"dcr-1s160rg\">One in 10 Australians have a boat licence and of the <a href=\"https:\/\/bia.org.au\/news\/2024-boating-industry-data-report-card-released\/\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\">more than 970,000 registered boats<\/a>, more than half a million are in Queensland and New South Wales.<\/p>\n<p class=\"dcr-1s160rg\">But it is difficult to know how many collisions there are with both large and smaller boats, experts say.<\/p>\n<p class=\"dcr-1s160rg\">The IWC says that globally, \u201cmost collisions go unseen and unreported\u201d. On Friday, it passed a resolution to work with all parties around the world to reduce \u201cvessel strikes\u201d which, the meeting agreed, was a \u201cpriority concern\u201d for the commission.<\/p>\n<p class=\"dcr-1s160rg\">Chris Johnson, the WWF\u2019s global lead on initiatives to protect whales, who was at the meeting, says it is an important step for the IWC.<\/p>\n<p class=\"dcr-1s160rg\">\u201cHumpbacks have been one of the great conservation success stories. But along Australia\u2019s humpback highway, there\u2019s growing risk for them to be hit by vessels,\u201d he says.<\/p>\n<p>A humpback calf with blunt-force trauma to its tail. Injuries such as this could affect migration, feeding, body condition and reproduction. Photograph: Isabel Taylor Pacific Whale Foundation Eco Adventures Australia<\/p>\n<p class=\"dcr-1s160rg\">\u201cThose strikes [in the images] would have been incredibly painful. We can see the evidence, but we have a black hole of information.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Experts say cutting speed limits for all vessels moving along migration routes, and making boats and ships more aware of the riskiest places and times of the year, would help.<\/p>\n<p class=\"dcr-1s160rg\">In California, for example, Johnson says shipping companies compete with each other to win high grades on public scorecards that assess how well they stick to speed limits during high-risk periods for whale strikes.<\/p>\n<p class=\"dcr-1s160rg\">In San Francisco Bay, <a href=\"https:\/\/www.theguardian.com\/environment\/2026\/may\/20\/san-francisco-bay-ai-whales\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\">AI-assisted whale spotting cameras <\/a>are being trialled to give captains more notice about whales in their path.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"Humpback whale filmed apparently grieving its stillborn calf \u2013 video\" src=\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2026\/10\/1791064809_425_1920.jpg\" height=\"259\" width=\"460\" class=\"dcr-18dqxt1\"\/>Humpback whale filmed apparently grieving its stillborn calf \u2013 video<\/p>\n<p class=\"dcr-1s160rg\">While Australian law in theory requires that collisions with protected species like humpbacks be reported, Mayaud says most are either undetected or are never documented.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThe big thing is that a strike doesn\u2019t have to kill a whale to have a serious impact,\u201d he says.<\/p>\n<p class=\"dcr-1s160rg\">\u201cIf a whale loses part of its fluke [tail] it may still survive, but swimming is likely to become less efficient and more energetically costly. That can then have knock-on effects on things like migration, feeding, body condition and potentially reproduction.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThere\u2019s also the immediate trauma \u2013 the pain, blood loss, infection \u2013 and then the possibility the animal is carrying the effects of that injury for years afterwards.<\/p>\n<p class=\"dcr-1s160rg\">\u201cSo I think the welfare issue is really about both the initial injury and the longer-term energetic and physical consequences for animals that survive.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"Gruesome images of adult and juvenile humpback whales along Australia\u2019s east coast with slash and gouge injuries from&hellip;\n","protected":false},"author":2,"featured_media":791095,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[90,56,54,55,4407],"class_list":["post-791094","post","type-post","status-publish","format-standard","has-post-thumbnail","category-wildlife","tag-science","tag-uk","tag-united-kingdom","tag-unitedkingdom","tag-wildlife"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/791094","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=791094"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/791094\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/791095"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=791094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=791094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=791094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}