This area holds the regular presence of the Large-eye Stingray as a resident range-restricted species. This species has been regularly recorded in the area from incidental catches in artisanal fisheries, underwater visual censuses (UVC), and mark-recapture surveys undertaken since 2008 (Costa 2010, 2016; Costa et al. 2015, 2017). Between July 2008 and August 2009, 260 Large-eye Stingrays were recorded in the area (Costa 2010; Costa et al. 2015). Of these, 120 individuals were incidentally caught by artisanal fisheries using gillnets, beach trawls, handlines, and spearfishing at depths <30 m. In UVCs (n = 213; 100 m long x 4 m wide), 30 individuals were observed. Another 100 individuals were directly sampled for mark-recapture studies in the same period. Large-eye Stingrays measured 14–35 cm disc width (DW) with 21 measuring <22 cm DW (Costa 2010; Costa et al. 2015). The reported size-at-birth for the species is 13–14 cm DW (Yokota & Lessa 2007) suggesting that some of these individuals were neonates/young-of-the-year or small juveniles. Most of the individuals were recorded in seagrass beds although they were also observed in coral reefs and sandy substrates. The species was recorded year-round across the different surveys with a larger number of individuals sampled in February and March (Costa 2010; Costa et al. 2015). Between 2013–2014, individuals were sampled at six locations across ~1,100 km of coastline in northeast Brazil using traps, handlines, and by free diving (Costa 2016; Costa et al. 2017). Of 137 individuals recorded, 24 (17.5%) were sampled in Maracajaú in January and February 2014, confirming the regular presence of the species in the area. The other five locations held similar number of individuals, with the maximum number (n = 25) recorded in Abrolhos, ~500 km from Maracajaú. Morphological and molecular analyses revealed population structure and suggested limited mobility for the species in northeast Brazil (Costa et al. 2017, 2022) highlighting the importance of this area. This species was observed also reported in 2019 in the area (TL Araújo Costa pers. obs. 2025). While Long-eye Stingray has been recorded in other areas across Brazil, Maracajaú stands out (along with Caiçara do Norte) as one of the few locations where the species has been regularly recorded for almost 20 years and in larger numbers than nearby locations. For example, sampling of artisanal fisheries in Pernambuco state (~250 km south of Maracajaú) between 2013–2016 recorded 89 Large-eye Stingrays. These individuals were incidentally caught in fish-weirs, beach seines, shrimp trawls, and longlines (Queiroz et al. 2019). Between 2016–2017 and 2018–2019, artisanal fisheries using bottom gillnets and handlines were monitored in Paracurú (~400 northwest) with 28 Large-eye Stingray recorded (Parada 2019). Of 1,184 fishing trips monitored in Parnaíba (~650 km northwest) between 2016–2017, only two individuals were recorded (Aragão et al. 2020). This species occurs in the East Brazil Shelf and North Brazil Shelf Large Marine Ecosystems and only occurs in the northeast region of Brazil (Costa et al. 2017).