The subject loggerhead appeared to dominate the smaller green and Kemp's ridley turtles (e.g., biting at rear flippers), whereas the larger loggerhead dominated the subject loggerhead (Schofield et al., [14]). Keywords: animal-borne video; competition; Gulf of Mexico; loggerhead; niche; sea turtle EN animal-borne video competition Gulf of Mexico loggerhead niche sea turtle 1 5 5 01/04/23 20230101 NES 230101 The competitive exclusion principle states that ecologically similar species sharing a niche cannot occupy the same space at the same time (Gause, [5]). The larger loggerhead's aggressive behavior toward the subject loggerhead, but apparently not toward the green turtles and Kemp's ridley turtles, might reflect an intraspecific response (Dujon et al., [2]; Schofield et al., [15]). [Extracted from the article]