{"id":152494,"date":"2025-05-02T09:33:05","date_gmt":"2025-05-02T09:33:05","guid":{"rendered":"https:\/\/websitedesigns.com.au\/elankanew\/?p=152494"},"modified":"2025-05-02T09:33:05","modified_gmt":"2025-05-02T09:33:05","slug":"sharp-decline-in-sri-lankas-blue-whale-population-raises-alarms-among-experts-by-malsha-elanka","status":"publish","type":"post","link":"https:\/\/websitedesigns.com.au\/elankanew\/sharp-decline-in-sri-lankas-blue-whale-population-raises-alarms-among-experts-by-malsha-elanka\/","title":{"rendered":"Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts &#8211; By Malsha &#8211; eLanka"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #333399;\"><strong>Sharp Decline in <span style=\"color: #008080;\">Sri Lanka\u2019s Blue Whale Population<\/span> Raises Alarms Among Experts &#8211; By Malsha &#8211; eLanka<\/strong><\/span><\/h2>\n<p><a href=\"https:\/\/divemagazine.com\/scuba-diving-long-reads\/the-whales-of-sri-lanka\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-152496 size-full\" src=\"https:\/\/divemagazine.com\/wp-content\/uploads\/TRUE-BLUE.jpg\" alt=\"Sri Lanka Blue Whale\" width=\"600\" height=\"400\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000000; font-size: 16px;\">Image Source :\u00a0<a style=\"color: #000000;\" href=\"https:\/\/divemagazine.com\/scuba-diving-long-reads\/the-whales-of-sri-lanka\" target=\"_blank\" rel=\"noopener\">divemagazine<\/a><\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"98\" data-end=\"284\"><span style=\"font-size: 16px; color: #000000;\">The blue whale population that has long inhabited the coastal waters of Sri Lanka is showing a significant and worrying decline in sightings, according to a report published by Mongabay.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"286\" data-end=\"526\"><span style=\"font-size: 16px; color: #000000;\">Researchers attribute this drop to multiple stressors including heavy ship traffic in one of the world\u2019s busiest maritime routes, unregulated whale tourism, pollution, rising sea surface temperatures, and broader impacts of climate change.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"528\" data-end=\"886\"><span style=\"font-size: 16px; color: #000000;\">Sri Lanka is home to a unique population of blue whales (Balaenoptera musculus) in the North Indian Ocean. Unlike most blue whales that migrate seasonally, these whales remain year-round in warm waters and have a distinct vocalisation pattern, says marine biologist Asha de Vos, founder of Oceanswell \u2014 a local marine conservation and research organisation.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"888\" data-end=\"1126\"><span style=\"font-size: 16px; color: #000000;\">\u201cThey are grazers, not gorgers,\u201d de Vos explains, meaning they feed continuously throughout the year. The southern coastal stretch between Galle and Dondra has long served as a critical feeding and breeding ground for this resident group.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"1128\" data-end=\"1595\"><span style=\"font-size: 16px; color: #000000;\">Conservation biologist Ranil Nanayakkara, founder of Biodiversity Education and Research (BEAR), has studied these whales closely with de Vos, documenting a full range of life cycle behaviors \u2014 including feeding, nursing, and courtship \u2014 all occurring within 20 kilometers of the shoreline. These coastal waters are rich in phytoplankton and zooplankton, sustained by deep sea canyons and upwelling currents, providing vital nutrition for the ocean\u2019s largest mammals.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"1597\" data-end=\"2038\"><span style=\"font-size: 16px; color: #000000;\">While exact population estimates are difficult to establish, a 2023 study by Upul Liyanage from Sri Lanka\u2019s National Aquatic Resources Research and Development Agency (NARA) reported 729 blue whale sightings \u2014 though likely with repeat observations of the same individuals. Nanayakkara\u2019s own work has documented 81 unique blue whales based on their tail fluke patterns, while Oceanswell continues to develop a detailed photographic database.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"2040\" data-end=\"2351\"><span style=\"font-size: 16px; color: #000000;\">Sri Lanka\u2019s blue whales have been central to a booming whale-watching industry, particularly in Mirissa, Trincomalee, and Kalpitiya. A study noted nearly 80,000 whale-watching tourists annually, with tour operators once confident enough to promise sightings \u2014 or offer free return trips if whales were not seen.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"2353\" data-end=\"2622\"><span style=\"font-size: 16px; color: #000000;\">However, survey data from Oceanswell, BEAR, local operators, and fishermen consistently point to a decline in whale numbers. \u201cThe reduction in numbers has been going on for a while,\u201d says de Vos. \u201cWe\u2019ve been observing fewer blue whales for years now, not just in 2024.\u201d<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"2624\" data-end=\"2994\"><span style=\"font-size: 16px; color: #000000;\">Nanayakkara echoed this, stating that since 2018, there has been a visible decline. \u201cThis year, only four sightings were reported \u2014 one in the northwest, none on the eastern coast, and just three off Mirissa. Even acoustic monitoring using hydrophones has failed to detect their vocalizations,\u201d he noted. In comparison to the 729 sightings in 2015, the drop is dramatic.<\/span><\/p>\n<p class=\"\" style=\"text-align: justify;\" data-start=\"2996\" data-end=\"3481\"><span style=\"font-size: 16px; color: #000000;\">NARA is closely monitoring the trend. Liyanage noted that a 2024 transect study showed over a 90% reduction in sightings. Further research is planned, including a comprehensive marine study by the Norwegian scientific vessel <em data-start=\"3221\" data-end=\"3238\">Fridtjof Nansen<\/em>. This initiative will assess marine mammal populations, plankton levels, chlorophyll concentration, and sea surface temperatures, with short-term studies also planned between Dondra Head and Galle \u2014 the core of the whales\u2019 historical habitat.<\/span><\/p>\n<div style=\"text-align: center;\"><span style=\"color: #800000;\"><em><a style=\"color: #800000;\" href=\"https:\/\/websitedesigns.com.au\/elankanew\/elanka-newsletter-sign-up\/\" target=\"_blank\" rel=\"noopener\"><strong>Click here to receive your free copy of the eLanka Newsletter twice a week delivered directly\u00a0to\u00a0your\u00a0inbox!<\/strong><\/a><\/em><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts &#8211; By Malsha &#8211; eLanka Image Source :\u00a0divemagazine The blue whale population that has long inhabited the coastal waters of Sri Lanka is showing a significant and worrying decline in sightings, according to a report published by Mongabay. Researchers attribute this drop to [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":152496,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[20,49983],"tags":[79386,61744,79384,79388,57633,79390,79385,79389,79387,71298],"class_list":{"0":"post-152494","1":"post","2":"type-post","3":"status-publish","4":"format-aside","5":"has-post-thumbnail","7":"category-articles","8":"category-malsha-madhuhansi","9":"tag-blue-whales-north-indian-ocean","10":"tag-blue-whales-sri-lanka","11":"tag-decline-in-blue-whale-population","12":"tag-dondra-head-marine-life","13":"tag-marine-conservation-sri-lanka","14":"tag-nara-sri-lanka-whale-study","15":"tag-oceanswell-asha-de-vos","16":"tag-sri-lanka-oceanic-research","17":"tag-trincomalee-whale-watching","18":"tag-whale-watching-sri-lanka","19":"post_format-post-format-aside"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.7.1 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Blue whales Sri Lanka<\/title>\n<meta name=\"description\" content=\"Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts - By Malsha - eLanka The blue whale population that has long\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts - By Malsha - eLanka\" \/>\n<meta property=\"og:description\" content=\"Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts - By Malsha - eLanka The blue whale population that has long\" \/>\n<meta property=\"og:url\" content=\"https:\/\/websitedesigns.com.au\/elankanew\/sharp-decline-in-sri-lankas-blue-whale-population-raises-alarms-among-experts-by-malsha-elanka\/\" \/>\n<meta property=\"og:site_name\" content=\"eLanka\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/eLanka.com.au\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-02T09:33:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/websitedesigns.com.au\/elankanew\/wp-content\/uploads\/2025\/05\/Sri-Lanka-Blue-Whale.png\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"eLanka admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"eLanka admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/websitedesigns.com.au\/elankanew\/sharp-decline-in-sri-lankas-blue-whale-population-raises-alarms-among-experts-by-malsha-elanka\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/websitedesigns.com.au\/elankanew\/sharp-decline-in-sri-lankas-blue-whale-population-raises-alarms-among-experts-by-malsha-elanka\/\"},\"author\":{\"name\":\"eLanka admin\",\"@id\":\"https:\/\/websitedesigns.com.au\/elankanew\/#\/schema\/person\/f6e635b74ab35ef88a68a9973cacc5bd\"},\"headline\":\"Sharp Decline in Sri Lanka\u2019s Blue Whale Population Raises Alarms Among Experts &#8211; 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