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What are the Differences between Whales, Porpoises, and Dolphins?

Whales, Porpoises, and Dolphins are all cetaceans but there are differences between each species.

Narrow-ridged finless porpoise in japan: whales, porpoises, and dolphins

Finless Porpoise, Miyajima Aquarium, Japan. (Photo: ori2uru/Wikimedia Commons, cc 2.0)

Whales, Porpoises, and Dolphins are all members of the cetacean species. They are also referred to as placental marine mammals since they carry their fetus in their uterus during most of the fetal developmental stage. They feed, suckle and give birth to their young ones underwater exclusively.

These aquatic animals are also referred to as “Conscious Breathers” because they can decide when to breathe. This feature differentiates them from sharks. Most sharks need to keep moving around before they can breathe.

But in contrast to sharks, cetaceans can remain motionless in the water when they want to sleep. However, they

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