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This study reports the presence of dolphin (<jats:italic>Tursiops aduncus<\/jats:italic> and <jats:italic>Stenella clymene<\/jats:italic>) remains in the stomachs of three large shortfin makos <jats:italic>Isurus oxyrinchus<\/jats:italic>. Detailed analysis suggested active predation in at least one case, supported by <jats:italic>premortem<\/jats:italic> bite marks. This observation represents the first record of <jats:italic>S. clymene<\/jats:italic> in the diet of a shortfin mako. These findings highlight the opportunistic nature of shortfin mako, which may prey on juvenile dolphins under certain ecological conditions, providing new insights into their feeding behaviour and trophic ecology.<\/jats:p>","DOI":"10.1111\/jfb.70113","type":"journal-article","created":{"date-parts":[[2025,6,15]],"date-time":"2025-06-15T23:33:32Z","timestamp":1750030412000},"page":"1433-1435","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Do shortfin mako <scp><i>Isurus oxyrinchus<\/i><\/scp> hunt dolphins actively?"],"prefix":"10.1111","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6650-3020","authenticated-orcid":false,"given":"Gonzalo","family":"Mucientes","sequence":"first","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO\u2010BIOPOLIS) Universidade do Porto  Vair\u00e3o Portugal"},{"name":"Ecolox\u00eda Azul\u2014Blue Ecology Association  Vigo Spain"},{"name":"Instituto de Investigaciones Marinas (IIM), CSIC  Vigo Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nair","family":"Vilas\u2010Arrondo","sequence":"additional","affiliation":[{"name":"Instituto de Investigaciones Marinas (IIM), CSIC  Vigo Spain"},{"name":"Centro Oceanogr\u00e1fico de Vigo Instituto Espa\u00f1ol de Oceanograf\u00eda (IEO, CSIC)  Vigo Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Villegas\u2010R\u00edos","sequence":"additional","affiliation":[{"name":"Ecolox\u00eda Azul\u2014Blue Ecology Association  Vigo Spain"},{"name":"Instituto de Investigaciones Marinas (IIM), CSIC  Vigo Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,6,15]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0025315412001154"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0025315423000863"},{"issue":"4","key":"e_1_2_7_4_1","first-page":"305","article-title":"Shark predation on Indian Ocean bottlenose dolphins Tursiops truncatus off Natal, South Africa","volume":"24","author":"Cockcroft V. 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