Question

Animals like whale, walrus live in water (ocean). Whether they are included in pisces or mammalia?

Answer 1

Whales and walruses are aquatic and marine mammals. They are not included under the Pisces category. They lack gills for breathing dissolved oxygen in water. They possess neither scales on their bodies nor the ability to lay eggs. Whales and walruses possess mammary glands, akin to all other mammals. They produce live offspring. They respire only through their lungs by elevating their nostrils above the water’s surface. Consequently, they are classified within Mammalia.