Most, like whales, have blubber and fat to keep them warm.
Dorsal fat in marine mammals helps to insulate their bodies and regulate their temperature by providing a layer of blubber that helps them stay warm in cold water.
Most marine organisms are ectotherms, meaning their body temperature is dependent on the surrounding water temperature. However, some larger marine mammals like whales and dolphins are endotherms and can regulate their body temperature independently of the water.
Marine mammals respond to temperature change in various ways. In most cases, a change in temperature will cause the mammals to change their habitat.
No, a narwhal is a marine mammal and is warm-blooded like other mammals. They have the ability to regulate their body temperature and maintain a stable internal environment regardless of the external temperature of their environment.
Inuits hunt whales in order to use their blubber.
Dolphins
Yes all marine mammals have eyelids.
Marine mammals do not live on land, and no marine mammals lay eggs. Marine mammals include whales, dolphins and porpoises.
No, penguins do not have blubber. Instead, they have a layer of feathers that insulate them and help regulate their body temperature in the cold water. Blubber is typically found in marine mammals like seals and whales to help them stay warm in cold water.
No, penguins are not marine mammals. They are birds that are adapted to living in aquatic environments. Marine mammals include animals like whales, dolphins, seals, and sea otters.
Marine mammals.
Warm-blooded vertebrates that have hair and give birth to live young are known as mammals. This class of animals includes species such as humans, dogs, and whales. Mammals are characterized by their ability to regulate their body temperature internally, possess mammary glands for nursing their young, and typically have fur or hair covering their bodies. Examples of mammals that fit this description include most land mammals, as well as some marine mammals like dolphins.