What sea mammals are omnivores?
a fish is a omnivore because it eats both plants and animals
There is a variety of mammals in the animal kingdom so many so that it is of their nature to be carnivorous for example the lion or tiger and a lot of mammals are omnivores such as the human. There also plenty of herbivores such as giraffes, alpacas or llamas so the conclusion is that mammals are not all omnivorous but there is vast varietyit would probably not be possible.
Mammals are a class of animals with similar attributes, including vertebrates, air breathing, possession of hair, and many more. There are many sub-categories, but whether they are carnivores herbivores or omnivores are based on how they adapted to their environment. We are omnivores, and lions are carnivores. Yet, we are both mammals.