How do narwhals perform excretion?

Narwhals, like other marine mammals, excrete waste primarily through their rectum. They expel solid waste (feces) and liquid waste (urine) separately. The buoyancy of water aids in the dispersal of their waste, which is essential for maintaining the cleanliness of their habitat. This process is similar to that of other cetaceans, contributing to the nutrient cycling in their oceanic environment.