Dear student, A group of penguins when they are on land called waddle or rookery but when they are in water called raft. Regards.
The thick layer of fat found in polar bears, penguins, whales, seals and dolphins which helps protect against the cold and also aid in buoyancy is called:
Penguins huddling: To withstand the harsh weather of the Antarctic, emperor penguins huddle in groups. Assume that a penguin is a circular cylinder with a top surface area a =0.26 m2 and height h = 90 cm. Let Pr be the rate at which an individual penguin radiates energy to the environment (through the top and the sides); thus NPr is the rate at which N identical, well-separated penguins radiate. If the penguins huddle closely to form a huddled cylinder with top surface area Na and height h, the cylinder radiates at the rate Ph. If N = 1000, by what percentage does huddling reduce the total radiation loss?