Bottlenose Dolphins are stout-bodied animals with a short beak and erect dorsal fin. Their coloration is grey tinged with purple above and paler undersides. Adults can grow to about 10 feet.
Appearance: Dolphins range in color depending on the species, from white, pearl, and pink to darker shades of brown, gray, blue, and black.
Many dolphins are grey in color, some species have various patterns of black and white, and a few are even pink. In terms of behavior, all species of dolphins are quite gregarious. In fact, many dolphin species can form groups of over 1,000 individuals, known as super pods!
They come in many shades of pink (and gray).
The Amazon pink river dolphin is obviously famous for its pink color. But, many don't know that it also comes in a variety of other shades. The dolphins actually start off gray when they are young, and slowly turn pink as they get older.
The coloring is believed to be scar tissue from rough games or fighting over conquests. The brighter the pink, the more attractive the males are to females—at least during mating season, which takes place when the water has receded and males and females are confined to the river channel again.
The Amazon pink river dolphin can change its color! Although Amazon pink river dolphins are famous for its pink hue, they weren't born this way. The dolphins are actually born gray and slowly turn pink as they age.
The Amazon river dolphin, also known as the pink river dolphin or boto, lives only in freshwater. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.
Juveniles are black and grey and adults are black and white. The largest Commerson's dolphins are those living around the Kerguelen Islands and can grow up to 1.8 m (5 ft 11 in) long. The smaller South American Commerson's dolphins grow to 1.46 m (4 ft 8 in).
Not all of them are pink
These dolphins are originally born with a grayish color. And as they age, many of them turn pink (due to their scar tissue produced by wounds after fights and aggressive games during childhood and youth) While others remain gray.
According to the Blue World Institute, pink- or white-colored bottlenose dolphins are rare, and it's a trait seen among those that have albinism. "Albino dolphins are uncommon and therefore attract human attention leading to some of them being unfortunately captured and held captive," the Institute says.
Depending on the species, dolphins range in color from white, pearl, and pink to darker shades of brown, gray, blue, and black. A dolphin is a mammal, and needs to breathe air through its blowhole, just as whales and porpoises do. Dolphins have smooth skin, flippers, and a dorsal fin.
Most urine was clear, pale yellow to dark yellow, and had a fishy odor. Dipstick glucose, bilirubin, ketones, and nitrites were negative in all dolphins.
Introduction to dolphins
This cycle can last up to 30 minutes in some large species. The skin color of dolphins is grayish-blue, but it can also be black, white, light gray, blueish and even pink or the combination of those colors varying according to the species.
Dolphin, like many game fish, are blessed with a coloration scheme called countershading, which they use to their advantage when sneaking up on flying fish and eluding predation. These open water hunters feature light colored undersides, usually white or pale yellow, with dark green or blue shoulders and topsides.
The science makes one fact undeniably clear: wild dolphins of some species are noted for seeking out social encounters with humans. The phenomenon of lone sociable dolphins – for whom human contact appears to substitute for the company of their own kind – is documented extensively in the scientific literature.
Dolphins have a reputation for being friendly, but they are actually wild animals who should be treated with caution and respect. Interactions with people change dolphin behavior for the worse. They lose their natural wariness, which makes them easy targets for vandalism and shark attack.
An adult Indo-Pacific humpback dolphin is grey, white or pink and may appear as an albino dolphin to some. Populations along the coasts of China and Thailand have been observed with pink skin. The pink colour originates not from a pigment, but from blood vessels which were overdeveloped for thermoregulation.
Depending on the location where they reside, River Dolphins will vary in size. Some of them can be up to 8 feet long but most of them are much smaller than that. They can also be found in a variety of colors. Some that you are known to exist include gray, black, brown, pink, yellow, and white.
Dall's porpoises have small, robust bodies and triangular heads. In addition to a small dorsal fin, they have another small hump located just in front of their tail flukes. This hump is more pronounced in males. Dall's porpoises resemble orcas because of their black bodies and white underbellies, but are much smaller.
Dolphin Blue is a dark grayish blue inspired by the fun-loving creatures of the ocean.
An estimated 144,300 hourglass dolphins remain south of the Antarctic convergence. There are no direct threats to this species, largely because their remote habitat is rarely visited by humans. However, climate change could still pose a threat to hourglass dolphins in the near future.
Fishermen were stunned to see a rare 'pink' dolphin frolicking in the sea near their boat. Footage shows the moment the pink mammal comes up to the surface for air before diving under water. Thurman Gustin, from Houston, Texas, filmed the remarkable footage at the Old River Pass, Cameron Parish, Louisiana, USA.
While intelligence is difficult to quantify in any organism, many studies suggest that dolphins are second only to us humans in smarts. Using brain size as a barometer, dolphins come in second only to humans in brain-to-body size ratio. However, dolphins also excel intelligence-based tests.