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They need a blowhole to breathe with. They come up to the surface out of the water and "breathe in air" through the blow-hole. Then they can go back down into the water for a period of time until they need to re-surface for more air.

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How many blowholes do toothed whales have?

Toothed whales, like dolphins and porpoises, typically have one blowhole on top of their heads. This singular blowhole allows them to quickly surface, take a breath, and expel air before diving back underwater.


What makes up a gray whales respiratory system?

A gray whale's respiratory system consists of blowholes located on the top of its head, which it uses to breathe air at the water's surface. The blowholes connect to the lungs, allowing the whale to exchange gases necessary for respiration. Gray whales are mammals and require oxygen from the air to survive.


Whales use respiration or fermentation to gain energy when they swim at the surface?

Whales use respiration to gain energy when they swim at the surface. They breathe air through their blowholes, taking in oxygen which is then transported to their muscles for cellular respiration. This process helps them convert oxygen and nutrients into energy efficiently, allowing them to swim and perform other activities. Fermentation is not a primary energy source for whales, as it occurs in anaerobic conditions and is not suited for their aerobic lifestyle.


Special features about whales?

Whales are mammals, not fish, and have unique adaptations to live in water, such as a thick layer of blubber for insulation and buoyancy. They are known for their complex communication abilities, including using songs and calls to communicate with others in their pod. Some whale species, like the blue whale, are the largest animals on Earth, growing up to 100 feet in length.


How does a fish without gills get oxygen?

If a fish doesn't have gills it can't breathe so it can't get oxygen