Marine biology gannets, and auks. Although they spend most of their lives in the ocean, species such as gulls can often be found thousands of miles inland. There are five main types of marine mammals, namely cetaceans (toothed whales and baleen whales); sirenians such as manatees; pinnipeds including seals and the walrus; sea otters; and the polar bear. All are air-breathing, and while some such as the sperm whale can dive for prolonged periods, all must return to the surface to breathe. Marine habitats can be divided into coastal and open ocean habitats. Coastal habitats are found in the area that extends
Greater white-toothed shrew and other small carnivorous mammals such as weasels are the main predators of "C. russula". In order to avoid predation, the greater white-toothed shrews can be found undercover of vegetation or leaf litter when active. Cryptic coloration is also used as an effective method to avoid predation. The greater white-toothed shrews are classified as semi-social mammals. During winter, "C. russula" are found sharing nests and enter torpor. Mated pairs are found guarding their territories together. "C. russula" are highly monogamous and exhibit a female-biased dispersal, which is highly uncommon in mammals. This dispersal pattern can also occur due to infiltration