physical characteristics of dolphins

Without outer ears they are able to hear through an area on their jaws that acts as a window to their inner ears.
Dolphins have lived to be 55 in captivity and are believed to live around the age of 30 in the wild. Suggested Grades: 3rd Grade - 4th Grade - 5th Grade Dolphins (Odontoceti) are a group of 44 species of toothed whales or cetaceans.There are dolphins in every ocean on Earth, and there are freshwater species of dolphins that inhabit rivers in South Asian and South American. Dolphins are popularly noted for their grace, intelligence, playfulness, and friendliness to humans. In South American waters, the maximum length of males is about 144 cm (4.7 ft.) while females are 147 cm (4.8 ft.). Both common dolphin species are medium-sized; adults range between 1.9 and 2.5 m (6.2 and 8.2 ft) long, and can weigh between 80–235 kg (176–518 lb), although the range between 80–150 kg (180–330 lb) is more common. • Students will be able to describe the physical characteristics of dolphins.

The color pattern on the body is unusual. BOTTLENOSE DOLPHINS - Physical Characteristics...Discover animal, environmental, and zoological career facts as you explore in-depth topic coverage via SeaWorld, Busch Gardens, and Discovery Cove's on-line information books. Complete Dolphin Facts For Kids that will answer all the questions that arise in a kids' mind.

Physical characteristics. ). • Students will be able to explain how dolphins are organized into groups and how they communicate with each other. The overall anatomy of the dolphin is designed to survive in the water.

The largest dolphin species (the orca) grows to more than 30 feet long while the smallest, Hector's dolphin, is just 4.5 feet in length. Coastal bottlenose dolphins measured off Sarasota, Florida average 2.5 to 2.7 m (8.2 to 8.9 ft.) and weigh between 190 and 260 kg (419 to 573 lbs. Their backs are a dark gray or blue, and their bellies are a light gray or white. Dolphins, which evolved long after sharks from land mammals, adapted to the water with similar physical characteristics.

The coloring of both sharks and dolphins acts as camouflage. dolphin- breathes air through blowhole, uses echolocation to locate where things are and catch fish, is silver gray in color, has 80 to 100 cone-shaped teeth, is a marine mammal, has tail flukes, flippers, and a dorsal fin. All dolphins have similar anatomical and morphological characteristics; this means that all species have some features that do not differ widely between species. Dolphins and other whales are mammals, but with their hairless bodies and torpedo-like shape they’ve got more in common with fish. The average adult length of dolphins in Alliance of Marine Mammal Parks and Aquariums facilities is 2.59 m (8.5 ft.).

Size. The coloring of both sharks and dolphins acts as camouflage.

Males are generally longer and heavier. Dolphin Physical Characteristics. Conservation. The most widely recognized species are the common and bottlenose dolphins (Delphinus delphis and Tursiops truncatus, respectively).The bottlenose, characterized by a “built-in smile” formed by the curvature of its mouth, has become a familiar performer in oceanariums. Their backs are a dark gray or blue, and their bellies are a light gray or white. Dolphins are relatively long-lived, with some individuals living more than 50 years. Dolphins, which evolved long after sharks from land mammals, adapted to the water with similar physical characteristics. Throughout their distribution, Commerson's dolphins average 120 to 170 cm (3.9-5.6 ft.) and weigh up to 86 kg (190 lbs.). Dolphin Characteristics . Dolphins can be found in many bodies of water, from almost every ocean to large rivers such as the Amazon. The average adult length in the wild is 2.2 to 2.7 m (7.2 to 8.9 ft.). It is the result of a flared jawbone, which serves as an ultra-sensitive ear. Individual dolphins use a distinct signature whistle to identify themselves, almost like a name. • Students will be able to identify the behavioral characteristics of dolphins. The distinct dolphin "smile" is a manifestation of the natural curve of the animal’s jawline not a friendly disposition. Dolphins communicate with one another using a series of clicks, whistles, screams, grunts, moans, squeaks and other noises. Although some sharks and killer whales prey on dolphins, the biggest threat comes from humans.
All 40 recognized dolphin species have captured the human imagination for their playful disposition, advanced intelligence, and keen hunting senses.


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