Hypothetical marine humanoids would likely have a diet dictated by their environment and physiology. Nutritional requirements would necessitate the consumption of resources available within their aquatic habitat. This would encompass a range of marine organisms and plant life.
Understanding the potential dietary habits of such beings provides insight into the possible structure of their society and their impact on the marine ecosystem. Consideration must be given to energy expenditure related to swimming and maintaining body temperature in potentially colder waters. Efficient nutrient absorption would be crucial.