Penguins are not able to breathe underwater; however, all 17 of the penguin species can hold their breath for as long as 15 minutes. This amazing capability allows them to dive deep within the ocean to find food.Know More
Many penguin species are also fast at getting into the water because they do not want prey to be able to catch them. The Adelie penguins can accelerate from 0 to 16 mph, according to the Tennessee Aquarium, which helps them avoid the slow 4-mph swimming of the leopard seal.
Penguins also have a black and white color combination. The white is found on the stomach and sometimes on choice areas of the penguin's face. The reason for this particular black and white color combination is because the penguin has evolved to protect itself. The black color is what is seen from above, which helps the penguin blend into dark water. The white color is what is seen from below, which helps the penguin blend into the light sky as it swims or sits on an ice patch.
Penguins are also able to swim in different ways while they hold their breath. They can waddle or hop on land as well as slide on the ice with their stomach. In the water, they can swim close to the surface or dive below in what is often called "flying." They also can swim like the dolphins do by popping their head up out of the water or by making little jumps.Learn more about Marine Life
Although hermit crabs must keep their gills moist in order to be able to breathe, they cannot breathe underwater. In fact, they will die if they are submerged in water because their gills will not provide the oxygen they need to survive. This is why it is recommended that owners keep a piece of sponge in their water dish, so they have something to hold onto and will not drown.Full Answer >
Jellyfish don't breathe in a typical fashion, as they have no respiratory system; their ultra-thin membranes are able to diffuse oxygen into their cells from the water around them. Because of their physical makeup, jellyfish actually require much less oxygen than many other sea creatures.Full Answer >
Navy SEALs must be able to hold their breath underwater for at least two minutes. In addition, they must perform this feat without producing bubbles.Full Answer >
Aquatic plants are able to absorb the carbon dioxide (CO2) they need to make food directly from the water around them through their leaves, just as land plants obtain carbon dioxide from the air. The water provides the nutrients necessary for an aquatic plant to "breathe" underwater.Full Answer >