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oceanservice.noaa.gov/facts/dolphin_porpoise.html

Dolphins and porpoises have many similarities, one of which is their extreme intelligence. Both have large, complex brains and a structure in their foreheads, called the melon, with which they generate sonar (sound waves) to navigate their underwater world. It is likely that more (or fewer) differences between dolphins and porpoises will be ...

www.diffen.com/difference/Dolphin_vs_Porpoise

What's the difference between Dolphin and Porpoise? Dolphins and porpoises are cetaceans — marine mammals — that are closely related to whales. Dolphins belong to the Delphinidae family and are up to 30 feet long. Porpoises, belonging to the Phocoenidae family, are smaller and stouter, with othe...

www.livescience.com/55173-whats-the-difference-between...

If you want to become an expert at telling the difference the next time you spot one in the ocean, first look at the animal's grin. ... What's the Difference Between Dolphins and Porpoises ...

animalsake.com/porpoise-vs-dolphin

3) Female porpoises are approximately 1.7-m or 5.5-ft long, whereas males are approximately 5-ft long. As for dolphins, there is a great deal of diversity, with their length ranging between 1.2 m to 9.5 m and weight between 38 kg to 9.5 tons depending on which species you take into consideration.

www.differencebetween.info/difference-between-dolphins-and-porpoises

Key Difference: Dolphins and Porpoises are both mammals that differ in terms of body shape, shape of dorsal fin, teeth, behavior, traveling pattern, speech and lifespan. Although not many people know it but there are various different types of dolphins and many cetacean creatures that resemble dolphins but are not at all dolphins.

www.whalefacts.org/dolphin-vs-porpoise

Differences. When it comes to the differences among the two species there are a number of factors that help differentiate dolphins from porpoises. First of all with around 40 known species of dolphin there is a much greater diversity within the dolphin family as compared to the 6 species of known porpoise.

www.worldatlas.com/articles/what-is-the-difference-between...

The differences between a dolphin and a porpoise are outlined below. Differences In Physical Characteristics Between A Dolphin And A Porpoise. Several differences tell the two animals apart ranging from teeth, fins, size, and shapes. There are 40 known species of dolphin meaning there is greater diversity identified in dolphins compared to the ...

dolphinworld.org/dolphins-vs-porpoises-story

However there are three main differences between dolphins and porpoises, that is, porpoises are divided in to six species and sub species, while dolphins are divided into 40 different main types, the average dolphin is generally longer than the average porpoise, and the most obvious visible difference between the two groups is that porpoises ...

us.whales.org/whales-dolphins/what-are-the-differences...

Differences between a dolphin and a porpoise. The biggest difference is size, with all species of porpoise being that much smaller than their dolphin cousins. Porpoises don't have the pronounced beak that most, but not all dolphins have and they also have different shaped teeth. Porpoise teeth are spade-shaped whilst dolphins are conical.

www.wonderopolis.org/wonder/whats-the-difference-between...

When you concentrate on the differences at the family level, dolphins and porpoises can seem quite different. There are definite, yet subtle physical differences between the two aquatic mammals. Porpoises tend to be smaller than dolphins.