irrawaddy dolphin

irrawaddy dolphin

What do Irrawaddy dolphins look like?

irrawaddy dolphin

The Irrawaddy dolphin is one of the smallest cetaceans and lives in freshwater rivers and lakes across Asia and Africa. There are three known subspecies of the Irrawaddy dolphin: the Irrawaddy river dolphin, the Chinese Irrawaddy dolphin, and the Mekong River dolphin. They live in tropical regions and spend much of their time near water sources. Their diet consists mainly of fish and crustacea. The Irrawaddy dolphin is closely related to the killer whale.

Scientific classification: Orcaella

Binomial name: Cetus crassidens

Common name: Irrawaddy dolphin

The Irrawaddy dolphin is a species of dolphin found in coastal waters throughout Southeast Asia. Its name comes from the Irrawaddy River in Myanmar, where it was discovered. Like many cetaceans, it is highly social, living in groups called pods. These groups usually consist of one adult male and several females and calves.

Irrawaddy dolphins live in shallow water near shorelines and estuaries. They feed mainly on fish, crustaceans, molluscs and jellyfish. Their diet consists mostly of zooplankton such as copepods and krill.

They communicate with each other using high frequency whistles, squeaks and moos, which vary depending on age, sex, mood and context. Dolphins use echolocation to find food and navigate.

Their bodies are covered in thick skin, making them resistant to predators. However, they are vulnerable to attacks from boats, pollution, noise, and entanglement in fishing nets.


The Irrawaddy dolphin belongs to the family Platanistidae within the cetaceans. It is monotypic; there are no subspecies.

There are three recognized subpopulations of the Irrawaddy dolphins:

1. The Western population (Irrawaddy dolphin), ranging from southern China to Myanmar, Thailand, Vietnam, Cambodia, Laos, Malaysia and Indonesia.

2. The Eastern population (Ganges river dolphin), ranging from Bangladesh to Burma, India and Sri Lanka.

3. The Philippine population (Philippine river dolphin). This population includes the Amami Islands, Taiwan Strait and the Philippines.

The Irrawaddy River in Myanmar is named after the Irrawaddy dolphin, while the Ganges River in India is named after the Ganges river dolphin.


They are one of the most beautiful animals in the world. They live in warm waters around the globe, where they play an important role in maintaining the balance of nature. But what do you know about the Irrawaddy dolphin? In my opinion, we should know everything about them.

Here are some facts about the Irrawaddy dolphins that I think everyone needs to know.

• They have a long body.

• They have large eyes.

• They have big heads.

• They have small ears.

• They have short tails.

• They have very strong legs.

• They have webbed feet.

• They have flippers.

• Theycan swim at speeds up to 40km/h.

• They have two blowholes.

• They have four teeth on top of their mouth.

• They have five fingers on each hand.

• They have six toes on each foot.

• They have hair all over their body.

• They are born blind but open their eyes when they are 3 months old.

•They can dive for more than 30 minutes without coming back up.

• They have been known to stay underwater for up to 2 hours at a time.

• They have huge brains.

• They can hear sounds above 100Hz.

• They can see colors.

• They can detect electromagnetic fields.

• They can smell things up to 1 km away.

• They can tastethings up to 10 cm away.

• They have good hearing.

• They can sense vibrations.

• They can feel pain.

• They have whiskers.

• They have fur.

• They have sweat glands.

• They have blood vessels.

• They have bones.

• They have nerves.

• They have lungs.

• They have stomachs.

What do Irrawaddy dolphins eat?

Marine Irrawaddy dolphins are known for their ability to catch food underwater. They are often seen swimming along the bottoms of rivers and lakes where there are abundant schools of small fish. However, it turns out that marine Irrawaddys are not fussy eaters and eat any type of prey that are available in their habitats.

This includes prey found on the bottoms such as from time to time the dolphins surface with mud or sand on their heads or backs, presumably because they ate too much while diving. Marine Irrawaddys are also reported to eat squid and octopuses, and move inshore and into the mouth of river mouths during high tide, probably following the movement of their prey.


The species is named after the Irrawaddy River delta in Myanmar where it lives. This river is one of the largest rivers in Southeast Asia and runs through China, Burma, Thailand, Cambodia, Laos, Vietnam, Malaysia, Singapore, India, Bangladesh, Nepal, Pakistan, Bhutan, Afghanistan, Turkmenistan, Uzbekistan, Tajikistan, Kyrgyzstan, Mongolia, and North Korea.


A female or male dolphin will approach another dolphin and try to engage in sexual activity. If successful, the pair will intertwine facing their bellys together and begin to copulatate for approximately 40 seconds. After copulation occurs, the pair will separate and one will swim away while the other stays behind. This process repeats itself several times over the course of a day.


irrawaddy dolphin

The bottlenose dolphin is one of the most common marine mammals. There are many different types of bottlenose dolphins, including the Atlantic spotted dolphin, the Indo-Pacific humpback dolphin, and the Risso’s dolphin. They are found around the world, especially in warm waters. Bottlenose dolphins live in groups called pods. Each pod consists of a number of individuals. A group usually contains a few males and females, but sometimes there are just males.

These dolphins are thought to reach reproductive maturity at 7–9 years old. Mating occurs during winter in the Northern Hemisphere and spring/summer in the Southern Hemisphere. Gestation lasts 14 months. Females typically give birth to a single offspring every 2–3 years. This species reaches lengths of up to 3 meters and weights of up to 20 kilograms.

Irrawaddy dolphin found in?

Irrawaddy dolphins are found along coastal waters of Southeast Asia, including Myanmar, Thailand, Cambodia, Malaysia, Indonesia, Singapore, Bangladesh, India, Sri Lanka, Maldives, Pakistan, Afghanistan, Iran, Oman, Yemen, Djibouti, Eritrea, Ethiopia, Somalia, Kenya, Tanzania, Uganda, Rwanda, Burundi, South Sudan, Chad, Cameroon, Central African Republic, Congo, Equatorial Guinea, Gabon, Ghana, Liberia, Sierra Leone, Ivory Coast, Nigeria, Senegal, Gambia, Mali, Mauritania, Algeria, Libya, Morocco, Tunisia, Malta, Spain, Portugal, France, Italy, Greece, Turkey, Cyprus, Israel, Egypt, Lebanon, Syria, Jordan, Iraq, Kuwait, Saudi Arabia, Qatar, Bahrain, United Arab Emirates, Oman, Yemen, China, Japan, Taiwan, Korea, Vietnam, Laos, Cambodia, Australia, New Zealand, Papua New Guinea, Fiji, Samoa, Tonga, American Samoa, Cook Islands, Niue Island, Tokelau, Tuvalu, Kiribati, Marshall Islands, Micronesia, Federated States of, Palau, Guam, Northern Mariana Islands, Puerto Rico, Virgin Islands, British Virgin Islands, Saint Kitts and Nevis, Anguilla, Antigua, Barbuda, Dominica, Grenada, Montserrat, Saint Lucia, Saint Vincent and the Grenadines, Turks and Caicos Islands, Aruba, Bahamas, Barbados, Belize, Bermuda, Canada, Cayman Islands, Costa Rica, Cuba, Curacao, Dominican Republic, El Salvador, Falkland Islands, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Paraguay, Peru, Trinidad and Tobago, Uruguay, Venezuela, Guyana, Suriname, French Guiana, Martinique, Mayotte, Réunion, Saint Pierre and Miquelon, Saint Barthelemy, Saint Martin, Sint Maarten, Wallis and Futuna, Chile, Colombia, Ecuador, Peru, Bolivia, Argentina, Brazil, Paraguay, Uruguay, Venezuela, Suriname, Guyana, French Guiana, Chile, Colombia, Peru, Bolivia, Brazil, Argentina, Paraguay, Uruguay and Venezuela.

What do Irrawaddy dolphins eat?

The bottlenose dolphin uses its mouth to capture prey such as small fish, squid, shrimp, crabs, octopus, and even jellyfish. Dolphins use their mouths to catch prey, unlike most animals that use their hands. This feeding method allows them to consume large amounts of food quickly. In addition to eating, dolphins can communicate with one another through sounds, whistles, and squeaks. A group of dolphins can travel together, sometimes traveling up to 20 miles per day.

Irrawaddy dolphins are not picky eaters. They eat anything that is available in their environment including food items such as shrimp, crabs and even small fishes. These marine mammals feed mostly during night hours and usually surface near shorelines where there are plentiful numbers of small fish.

Marine Irrawaddys also consume squid and octopus and move inshore and into rivers mouth with high tide and further offshore as the tide goes out.

Habitat and subpopulations

The Irrawaddy dolphin is listed under Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), making trade illegal without a permit. Habitat destruction and pollution are major threats to the species, and there have been several recent reports of deaths due to boat collisions. In addition, the population appears to be declining; however, the exact cause of decline is unknown. There are no estimates of the total number of dolphins worldwide, but the population in Myanmar alone is thought to be less than 2,500 individuals.

In 2008, scientists began studying the genetic diversity of the Irrawaddy dolphin, and found that the populations in Bangladesh and Thailand had diverged genetically from those in Myanmar. This suggests that the populations of the Irrawaddy river dolphins are isolated from each other and that there is little gene flow among them. However, further research is needed to determine whether this separation is caused by geographical isolation or by different evolutionary pressures.

A study published in 2010 suggested that the Irrawaddy dolphin could be classified into three distinct groups based on mitochondrial DNA sequences: one group in the Indian Ocean, another group in Southeast Asia, and a third group in the Yangtze River basin. Another study published in 2012 concluded that the Irrawaddy river and Ganges river dolphin populations are genetically similar, suggesting that the two populations separated recently.

The freshwater Irrawaddy dolphins

We think that many generations ago some marine Irrawaddy dolphin explorers ventured into rivers in search of fish. When they found good fishing opportunities, they decided to stay there. These Irrawaddy dolphins eventually established themselves in freshwater habitats, completely separate from their marine counterparts. At least one population of these freshwater dolphins has been observed living along the Mekong River in Laos.

Population number

The total population size of the irrawaddy dolphin is unknown. There are estimates available for only parts of the range: in the Philippines – 77 dolphins; in Indonesia – 125 dolphins; Myanmar – 70 dolphins; Bangladesh – 58-72 dolphins.

Overall, numbers of Irrawadddy dolphins’ population are decreasing, and the species is now classified as vulnerable (VU).

Irrawaddy dolphins endangered

The main threat to the population size of the Irrawaddy dolphins is drowning in gillnets, which mostly happen during the dry season, when they are left in deep waters. This usually occurs in December-May, when the animals remain in the river.

On the other hand, electroosmosis poses a real danger to the population of these marine mammals, particularly those found in the Ayeyarwady River. Dolphins caught while swimming near power lines suffer from electrical shocks and die within hours.

In addition, the dolphin is threatened by pollution, dam building, and silt buildup. Construction of dams causes a sharp increase in the number of fish deaths due to flooding. Silt buildup also reduces oxygen levels in the water, making it harder for the dolphins to breathe.

Ge­o­graphic Range

The bioge­o­graphic range is one of the most impor­tant tools used to iden­ti­fy where species live. This is because it helps us under­stand how speci­es are dis­tin­guished from each oth­er and what con­di­tions make life pos­si­ble. For exam­ple, we know that water plays a key role in pro­vid­ing food and mate­r­i­al for plants and animals. But what about the land? How does soil and rock play into the mix? These are ques­tions that are often left open to debate.

Bioge­o­graphy aims to answer those ques­tions. A geo­gra­ph­ic region is defined as the area within which a specie can survive. So, if you want to know where a bird lives, you look up its biogeographic. If you want to know where humans live, you look up our bioge­o­log­ical regions. And if you want to know what makes a place hospitable to life, you study biogeographic.

But there’s a catch—the bio-ge­o­gram doesn’t tell you exactly where a specie lives. Instead, it tells you where the critter could live based on the physi­cal fac­toids of the planet. In gen­eral terms, a biodegradation maps out the areas where a specie could exist.

In some cases, a bioge­og­ra­phy map might show an entire continent covered in green. That’s because the specie could live anywhere within that continent. In other cases, a biogeography map might show a few small islands covered in blue. That’s becau­se the specie could live on just those islands. Or it could live on both islands and terra firma.

Now, let’s say you wanted to find out where a spe­cies lived. You could go to the inter­net and type “biogeography​ic regi​ons birds” into a search bar. Then, you could see a list of birds and their respective biogeographic ranges. However, that’s not always easy to do. Some birds don’t even have names! There are over 80,000 species of birds in the world today. Each species has a unique name. But many of them aren’t named. They’re known as “common birds.”

So, if you want to learn more about birds, you’d have to trawl through a ton of data. And that’s why biogeography is important. Because it gives us a way to quickly identify areas where speci­es could live. And once you have that information, you can start looking for clues about what makes a place hospita­ble to life.

Com­mu­ni­ca­tion and Per­cep­tion

Communication channels are the ways we connect with one another. They range from face-to-face interactions to social media platforms like Facebook and Twitter. Each channel offers unique benefits and challenges, and it’s important to understand how each works so you can optimize your communication strategies.

The most basic way people communicate is via words. Words are powerful because they allow us to convey ideas, feelings, thoughts, and opinions. However, there are several limitations to consider when choosing a channel. For example, written text requires literacy skills, while visual images require attention to detail.

Social media platforms provide a great opportunity to engage customers, build brand awareness, and increase sales. But they also come with certain risks, including negative comments about products or companies, spam, and privacy concerns.

Video allows businesses to show off their expertise, demonstrate product features, and give consumers a better understanding of what they offer. Video is a great tool for creating impactful content that engages audiences and encourages sharing.

Voice calls are still the best method for getting real-time customer feedback. In fact, studies suggest that voice calls generate twice as many leads as emails do. Voice calls also help improve customer satisfaction and loyalty.

Email marketing is a proven lead generation strategy that delivers high open rates and low costs per subscriber. Email campaigns can be used to send out messages to existing contacts, prospects, and even potential clients. You can use email to promote special events, announce new products, and keep customers up-to-date on news and promotions.

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