<p>The feeding ecology of the ocellated eagle ray <i>Aetobatus ocellatus</i>, an endangered elasmobranch species, was investigated in Réunion Marine Nature Reserve (Mascarene Archipelago). In October 2024, two feeding events involving holothurians were documented with photographs, one of which was also recorded on video; a third feeding event was recorded in October 2023. Observations took place in the fringing reef area of La Saline-les-Bains. Photographs and video recordings captured a female <i>A. ocellatus</i> preying on holothurians (<i>Holothuria leucospilota</i> and <i>H. atra</i>), a feeding behavior not previously documented for this species. The ray selectively consumed parts of the prey in detrital reef flat habitats, possibly avoiding internal organs or defensive structures. This observation provides novel evidence of dietary flexibility in <i>A. ocellatus</i>, which typically feeds on benthic invertebrates such as bivalves, gastropods, and occasional crustaceans. Two of the documented events involved the same photo-identified female, while the third could not be linked due to lack of visual confirmation. The behavior occurred in areas with high densities of holothurians (up to 1000 ind./100 m²), suggesting context-dependent foraging decisions. Although holothurians are not considered common prey for elasmobranchs, isolated reports in other species and these new findings raise questions about previously overlooked predator–prey interactions. The data were collected through a combined scientific and citizen science monitoring program. These results offer new insights into the trophic ecology of <i>A. ocellatus</i> and its potential role in benthic community dynamics. Such behavioral observations are essential to inform conservation strategies for this species and to better understand the functioning of coral reef ecosystems under increasing anthropogenic pressure.</p>