This is the northernmost record of a whitetip reef shark, Triaenodon obesus, in the Eastern Tropical Pacific. The sharkwas observed in Magdalena Bay, Mexico, at a depth of 4 m and had a total length of 1.2–1.5 m. The habitat where the recordwas made is consistent with the conditions for the distribution of species. The presence of T. obesus in the area could berelated to the protection of near natural areas and the seasonal bans on shark and ray fishing implemented in Mexico since2012.
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