This article relies on an ethnography of commercial divers that involves the author’s training, certification, and activity underwater to propose an ecofeminist analysis of the undersea (furthermore with the undersea). It presents how feminist environmental theory engages with the ethnographic method of immersion and how underwater fieldwork grounded in feminist theory contributes, in turn, to reflections on the role of embodiment in the production of ethnographic knowledge. This article emphasizes the role of experiencing risky situations (gender-based violence and life-threatening situations) in the research process to address the reproduction of masculinity that is part of the commercial diving training supported by the profession’s equipment and technologies. By doing so, the article unveils how participating in underwater activities as part of fieldwork raises issues for feminist ethics, especially regarding multispecies relationality. Overcoming these ethical limits and reconciling ecofeminism and ethnography in the study of underwater ecologies can, as the article concludes, rely on creative methods.