75%: The amount of their lifetime spent in the water. While some can have bursts of speed of up to 15 miles per hour, most penguins swim 5 to 6 miles per hour.
Countershading: The distinct tuxedo-like appearance of penguins. It’s a form of camouflage that helps to keep penguins safe in the water. From above, their black backs blend into the dark ocean and, from below, their white stomachs are hidden against the bright surface.
96.5° F: The incubation temperature for most penguins. Incubation is the time spent warming the egg before it hatches. With the exception of the emperor penguin, where the male solely incubates the egg, penguin partners take turns incubating eggs. The incubation period may be as short as one month, or as long as 66 days, depending on the species.
Supraorbital gland: Because penguins consume a lot of saltwater with their seafood, this gland is located just above their eyes to filter salt from the bloodstream. The salt is excreted through the bill or through sneezing.
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