© 1996-2015 National Geographic Society, © 2015- Many species of dolphins migrate to find food. 2020 National Geographic Partners, LLC. They must surface to breathe air and give birth to live young.

Dolphins have more than one mate, and generally produce a Dolphins are graceful, sleek swimmers that can reach speeds of more than 18 miles an hour.

Because of their great intelligence, dolphins have been used for military exercises and therapeutic support.

A dolphin pregnancy last between nine and 16 months. Dolphins live in all of the world’s seas and oceans; many inhabit coastal areas or areas with shallower water. They use their strong teeth to hold their prey, but then either swallow their prey whole tear it into small pieces.

Dolphins feed chiefly on fish and squid, which they track using echolocation, a built-in sonar that bounces sound waves off prey and reveals information like its location, size, and shape. Dolphin Facts for Kids Dolphins are meat eaters (carnivores) The Killer Whale that is also called an ‘Orca’ is really a type of dolphin.

It is known for its large size and black and white coloring and the ability to work together to herd prey. But the bones within the forelimbs of dolphins have been shortened and made more rigid by supporting connective tissue.

Dolphins are small-toothed Cetaceans, a group of marine mammals that evolved from land mammals. Dolphins do not have prominent external ear openings. Humans have long been fascinated with dolphins, but the relationship between humans and dolphins has been complex. They consume a wide range of animals including fish,

Dolphins are members of the order Cetacea, Suborder Odontoceti, Families Delphinidae, Iniidae, and Lipotidae.
They are relatively light eaters; the bottlenose dolphin, for example, eats about 5 percent of its weight each day.

When a pregnant female is ready to deliver, she separates herself from the rest of the pod to a location near the water's surface. Within those families, there are 21 genera, 44 species, and several subspecies. ThoughtCo uses cookies to provide you with a great user experience. Many dolphin species work as a group to herd or coral fish. Dive into the science of dolphin cognition with researchers studying how these amazing creatures make sense of their world.

By using ThoughtCo, you accept ourWhale, Dolphin, or Porpoise - Characteristics of Different CetaceansHomeschooling Resources for Learning About Dolphins The species of dolphins include:

Dolphins must rise regularly to the surface to breathe—becoming entangled in nets prevents this, leading to drowning.

Dolphins are small-toothed cetaceans easily recognizable by their curved mouths, which give them a permanent “smile.” There are 36 dolphin species, found in every ocean. They may also follow fishing vessels to enjoy the "waste" thrown overboard. Newborn calves look a bit different from their parents; they typically have dark skin with lighter bands which fade over time. They can swim almost immediately, but do require the protection of the pod; in fact, young dolphins are typically nursed for the first two to three years of life and may stay with their mothers for up to eight years. Dolphin pregnancies range in length from 11 to 17 months.

They are also playful and often frolic in a boat’s wake, leaping out of the water—possibly for fun, to communicate, or even shed pesky parasites.For centuries, people have hunted dolphins for their meat and blubber. Dolphins evolved from land mammals whose legs were underneath their bodies. 2. All rights reserved As a result, dolphins tails move up and down as they swim, whereas a fish’s tail moves from side to side. For example, the Northern Rightwhale Dolphins and the Southern Rightwhale Dolphins lack dorsal fins.

1. Within the dolphins' elongated jaw bone sits numerous conical teeth (some species have as many as 130 teeth in each jaw). Furthermore, marine heatwaves, also caused by climate change, appear to In addition to hunting and entanglement in fishing gear, freshwater dolphins face the additional threat of dams fragmenting and degrading habitat.

The forelimbs of a dolphin are anatomically equivalent to the forelimbs of other mammals (for example, they are analogous to arms in humans). Dolphins give birth to a single calf once every one to six years and then feed their babies milk through their nipples.

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