Whales, dolphins, and dugongs are marine mammals categorized as Endangered, Threatened and Protected (ETP) species. They belong to the order Cetacea, which is characterized by its slender and elongated body. Their forelimbs are called lateral fins and they also have dorsal fins. All cetacean species have a layer of fat with a maximum thickness of 60 cm, have no neck, no ears, no sweat glands, and have a tail with spikes for locomotion.
