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Blubber is a thick layer of vascularized adipose tissue under the skin of all cetaceans, pinnipeds, penguins, and sirenians. It was present in many marine reptiles , such as ichthyosaurs and plesiosaurs .
Later penguin ancestors are believed to have originated in New Zealand and Australia around 22 million years ago. ... Emperor penguins are heavy birds with layers of blubber to protect them ...
Penguins have both feathers and blubber. Penguin feathers are scale-like and serve both for insulation and streamlining. Endotherms that live in very cold circumstances or conditions predisposing to heat loss, such as polar waters, tend to have specialised structures of blood vessels in their extremities that act as heat exchangers. The veins ...
Parasitic species have been found in ecological situations different from the one they are associated with elsewhere, such as infecting a different type of host. Less than 2-3% of species are thought to be endemic. Many species are shared with areas of the Arctic. Most fungi are thought to have arrived in Antarctica via airborne currents or ...
Penguins are a group of aquatic flightless birds from the family Spheniscidae (/ s f ɪ ˈ n ɪ s ɪ d iː,-d aɪ /) of the order Sphenisciformes (/ s f ɪ ˈ n ɪ s ə f ɔːr m iː z /). [4] They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator.
It is commonly known as the fairy penguin, little blue penguin, or blue penguin, owing to its slate-blue plumage and is also known by its Māori name kororā. It is a marine neritic species that dives for food throughout the day and returns to burrows on the shore at dusk, making it the only nocturnal penguin species on land.
Its specific name is in honour of the German naturalist Johann Reinhold Forster, who accompanied Captain James Cook on his second voyage and officially named five other penguin species. [2] Forster may have been the first person to see emperor penguins in 1773–74, when he recorded a sighting of what he believed was the similar king penguin (A ...
Biologists have observed Adélie penguins engaging in pebble thievery when times are tough. Typically, if a penguin lacks the resources needed to win a mate and maintain a proper nest, they will ...