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Blue Whale: Why Is It Endangered?

Blue whales are the planet’s biggest animal, has ever existed. Blue whale populations have fallen by 98% over the past century owing to human overfishing. The blue whale is also known as the “bringer of joy” since it produces loud noises while singing, which has earned it a place in human culture.

  • Status: Endangered 
  • Known as: Blue Whale.
  • Estimated numbers left in the wild: 10,000 to 25,000.

Because they are so bright, whales are adored by humans.

It is said that Blue whales were first sighted in 1878. However, it was not until 1904 when samples of whale organs were first recorded by marine biologists.

However, they are currently listed as an endangered species by the International Union for Conservation of Nature (IUCN). Let us take a closer look at whales and discuss what has caused their population to decline so greatly.

Blue Whale

Read more to learn what Whales are, how many there currently are in the world, and why they’re endangered. And how people can help save these animals from extinction, where you might find Whales, and why Blue Whales are loved by humans.


The Blue Whale is the largest animal that has ever lived on Earth. It can grow as long as a Boeing 737 airplane is tall (the Blue Whale’s length is about 30 meters). They have grey in color and has a distinct moustache-like pattern.

Blue whales are baleen whales, meaning that they filter seawater through huge, slatted plates in their mouth, known as baleen. Large amounts of water are taken in and then squeezed out forcefully through the gaps in the baleen by the whale’s tongue.

This allows these massive creatures to harvest vast numbers of tiny animals called krill, similar to shrimp, which make up most of their diet. One adult whale needs around 3.6 tonnes of krill each day. A whale’s mouth can hold 90 tonnes of water, and its tongue alone weighs 2.7 tonnes.

Since whales are mammals, young whales nurse from their mother’s milk before being weaned onto krill. A young whale consumes 400 liters of milk daily.

These whales can move to the nutrient-poor equatorial waters to breed because they can store huge amounts of energy in their vast body.

When krill is abundant, the species can eat ninety times the amount of energy they use up in the process of finding, catching, and processing their food. This extreme efficiency lets the lay down massive energy reserves for the stresses of reproduction.

Blue whales, like other whales, “sing,” producing subsonic and sonic noises for up to 30 seconds at a time. These sounds echo hauntingly through the sea for many kilometers; other whales can likely hear them 1,600 kilometers away, though their exact purpose is still unknown.

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Blue Whale Population

The blue whale is not a common animal, and their population currently in the world is considerably low.

Whales are in grave danger due to a variety of reasons, including pollution in the ocean, human interference in their habitat, and being hunted by hungry humans. Whales have been going extinct for a very long time, but it has been much worse recently.

Since the 1970s, the global blue whale population populations have dropped from 20 million to only 500. Their populations have decreased by 98% in that time period.

Anatomy and Appearance

Blue whales are very big. They can grow up to 30 meters long and weigh 200 tons.

Whales used to be at the top of the food chain, but humans ate so many that they became endangered and their population decreased by 98%. The Whales cannot eat krill because they have no teeth, so healthy Whales eat lots of small fish.

These whale species are one of the loudest animals on Earth. Whales can be heard from 20 miles away, so the whales have to stay in groups when they sing or Blue Whale songs cannot be heard. They use songs to communicate with each other.

They communicate more often during breeding seasons, but whales will also sing to whales that are not in their Blue Whale family. Their songs have a pattern, and whales learn the song from their parents. Whales can sing for hours! Whales also make sounds with their tails called “flukes”.

They are spectacular ocean creatures, quite probably the heaviest animal to ever exist on Earth. Its weight of at least 170 tonnes put it well ahead of the largest dinosaurs, which likely weighed 90 tonnes or so.

These species are 30 meters long, dwarfing human beings and even fairly large human vehicles such as buses. It can spout water and air up to 10 meters upwards from its blow-hole when it surfaces.


They are found throughout the world’s oceans. Most are concentrated in specific areas today, including the North Atlantic, the eastern North Pacific, the Indian Ocean, and the Antarctic Ocean. Blue whales can only live in deep oceanic areas, preferring the cold regions where krill are abundant except in breeding season when they move closer to the equator.

See Related: Reasons Why Biodiversity Important to Ecosystems

Blue Whale Habitat

Blue whales can be found in all oceans on Earth. They feed on plankton and microscopic fish, as well as drink a lot of water every day to prevent dehydration.

Blue Whale Distribution

These species are found in all the world’s oceans. They migrate to different areas during different times of the year. They usually live in colder waters, but they have been known to migrate to warmer areas during winter.

Blue Whale Diet and Nutrition

These whales eat plankton, small fish, and tiny crustaceans called krill. They have been seen eating 100 pounds of food in one day.

Blue whales also need a lot of water, so they drink around 300 gallons per day. Whale calves receive a lot of their nutrients from their mother’s milk, which is rich in fat and proteins.

These species feed in a variety of habitats including coastal areas, but they prefer a colder environment.

Whales mainly feed in the Antarctic Ocean feeding ground during the winter when krill is most dense there. They also eat in the northern Indian Ocean, North Pacific and southern Atlantic.

They are found to feed during summers near Canada, Japan, Australia and South Africa. Whales are found to migrate at times when food is not available in these grounds. They can be found together with other whale species but mainly feed alone.

Blue Whale Mating Habits

Their mating habits take place during the winter months. These species do not have a mating season or any breeding period. Blue whales will go to the surface of the ocean and sing loudly, which is called “pumping”.

The whales can usually be seen “pumping” within 12 kilometers of the shore. The whale will make loud noises for 30 minutes and then they stop to see if any other whales reply.

Whales usually only respond to whales who are within 20 kilometers of them.

Blue whales will sing for 5 minutes or sometimes hours, depending on how long it takes for the whales that they contacted to reply. These creatures can communicate with up to 10 these species at once.

See Related: List of Animals That Mate For Life

Blue Whale Calf

Blue whale calves are born at a weight of two to three tonnes and a length of six to eight meters. They are nurtured with their mother’s milk for six to eight months, after which they start to consume krill. These creatures stay with their mothers for a year, after which they become independent. These whales reach sexual maturity at the age of 10 and can live up to 100 years.

Life Cycle

The Blue Whale has a lifespan of around 80 years. Blue Whales grow to be around 30 meters long and weigh around 150 tonnes. They are born after a gestation period of 11-12 months, and they weigh around 2 tonnes.

Blue whales nurse for 6-8 months, and they eat mostly krill, plankton, and small fish. Blue whales reach sexual maturity at around 5-10 years old. They mate in the winter, and the calf is born in the spring or summer. They can have up to 2 calves every 3 years.

Role in the Ecosystem

Blue whales can be found in all oceans on Earth and therefore they play a crucial role in the ecosystem as they recycle nutrients and oxygen.

These creatures are an important part of the marine ecosystem. They help keep the ocean’s ecosystems in balance by eating small fish and plankton.

Blue whales are also an important part of the human food chain, as they are hunted by humans for their meat and oil. They eat about four tons of fish and plankton a day, so they help keep the population in check by eating lots of fish.

However, Blue whales were exposed to dangers such as boat collisions and getting caught in fishing nets. Blue whales are also hunted for food and oil by humans is another reason why Blue whales became endangered.

Blue whales are now an endangered species because of humans. Blue whales are still being hunted by humans, despite the fact that Blue whales have been protected since 1966.

Behavior and lifestyle

Blue whales are single euphorbia species except for females who have a young population and they often gather in loose bands and sometimes feed together.

The large mammals use various sounds (called songs – hums, squeaks, and rumbles) and communicate with each other primarily during the summer breeding period.

Blue whale sounds produce extremely loud noise and have been documented with amplitude over 200 decibels, and are the loudest sound produced by a creature on Earth. The blue whale has tiny tails, so they depend on their huge tail to carry them out into the ocean.

Blue Whale vs Other Whale Species

A Blue Whale is much larger than other whale species.

Blue whales can range from 100 to 110 feet and weigh as much as 200 tons. Blue whales also have a bluish-gray color that can change depending on the angle you look at it and it has a white belly and pale gray back and fins.

Whales are mammals, which means they live in water and breathe air like humans. Whales use their blowholes to bring the air into their lungs.

They are marine mammals, which means they spend most of their time in the sea but need to come up for air every few minutes or so.

These species are critically endangered because humans have hunted them for centuries due to being attracted by their meat, fat, oil, and other parts.

Blue whales may sound similar to humpback whales because of their name, but they are actually different species. Blue whales are the largest animal that has ever lived on Earth and can weigh as much as 190 metric tons.

They have a beautiful color and can be found in all oceans on Earth. These whales eat plankton and small fish and drink a lot of water every day to keep themselves from dehydrating.

Humpback whales have a huge mouth, a hump under their head, and a long tail that is full of large baleen plates at the bottom. Humpback whales also have baleen plates that filter food which includes critters such as krill from the water.

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Blue Whale and Human Relationship

Blue whales and humans have had a close relationship for centuries. Blue whales were once hunted by humans because they thought they were a threat to their fishing industry, but we now know that whales are actually gentle giants.

These creatures are the largest animals on Earth and they only eat plankton and small fish, so they don’t really pose a threat to humans.

Whales are also beautiful creatures and many people love them. They are currently endangered because of humans.

Blue whales were once hunted almost to extinction for their meat and blubber, which people used as cooking oil and lamp fuel (oil). These animals also can be harmed by fishing nets because they sometimes get caught in them.

Human whale conflict is a natural phenomenon that has been created to describe the relationship that exists between humans and the whales.

These creatres are social animals that like to communicate with each other by making loud noises which is what the whale gets the name “the bringers of joy” from.

They are very wary of humans because they have seen many hunters kill these creatures for their oil, meat, and blubber. Blue whales also spend a lot of time feeding in order to grow their massive bodies.

When Blue Whales try to feed near shore, humans will often chase them away or use fishing gear near them which then causes these creatures to not be able to eat for long periods in order to grow back into their massive size.

Blue Whales have also been hit by ships so often that whale watching vessels must be accompanied by an escort boat to prevent these species from being injured, even though enforcement of these regulations is not being enforced or adhered to. Blue Whales are facing many threats which are making them go extinct more quickly than the average animal.

Blue Whale Sub Species

There are three Blue Whale Species: the Blue Whale, the Pygmy, and the Antarctic .

Pygmy Species

Pygmy Blue Whales are much smaller than Blue Whales, weighing only 1.5 tons. The whale is also called “the bringers of joy” because they make loud noises when they sing, which makes them loved by humans.

These species are also loved because of their beautiful color. They can be found in all oceans on Earth except for the Arctic Ocean. They eat plankton and small fish and drink a lot of water every day to keep themselves from dehydrating.

Antarctic species

The Antarctic Blue Whales are the largest subspecies of Blue Whale. They are also among the most endangered whales. The population of Antarctic whale species has decreased by 99%. They live in the cold waters near Antarctica and eat small fish and krill.

The Antarctic whale is the largest subspecies of Blue Whale and is found in the Antarctic Ocean. The North Pacific is the smallest subspecies of Blue Whale and is found in the North Pacific Ocean.

Northern subspecies

The Blue Whale Northern subspecies is a creature that is found in the colder waters of the Arctic Ocean.

The Northern subspecies has a thick layer of blubber, which helps to keep it warm in the cold water. The Northern subspecies also has a dark gray color, which helps to camouflage it from predators.

Northern Indian Ocean subspecies

The Blue Whale found in the Northern Indian Ocean is a subspecies of Blue Whale that is smaller than these creatures found in other oceans.

these species are found in the Northern Indian Ocean are also darker in color than other Blue Whales.

Chilean subspecies

The Blue Whale subspecies found in Chilean waters is the smallest of the three subspecies. The Blue Whale found off the coast of Chile is about 20% smaller than the other two subspecies. It is not clear why thissubspecies is smaller, but it is possible that the smaller size is an adaptation to the colder waters in Chile.

Blue Whale Facts

Here are some interesting facts about Blue Whales:

  • They are the largest animals to have ever lived on Earth.
  • They can grow up to be over 100 feet long and weigh up to 200,000 pounds!
  • The species are nicknamed “the bringers of joy” because they make loud noises when they sing.
  • They are also beautiful animals.
  • They have a blue-gray color that is unique to them.
  • They can be found in all oceans on Earth.
  • They eat plankton and small fish and drink a lot of water every day to keep themselves hydrated.
  • This huge mammal can dive underwater for up to 30 minutes at a time.
  • The species are an endangered species that is slowly but surely being killed off by humans.
  • Their numbers have dropped by 98% since the 1900s.

Conservation Status

Whale Tail

The Blue Whale is endangered because the size of its population has decreased by 98%.

Whales were almost hunted to extinction in the 1900s, but Blue Whale populations have been able to make a comeback since their aggressive hunting ended by international agreement in 1966.

One main reason for the Blue Whale’s endangerment is that it has been hunted excessively in the past few years. Because of this, there are fewer of it species in the world today than there were 50 years ago.


Whale Poaching

Whale poaching is the illegal hunting of Blue whales. Whale poaching is a major contributor to the decline in Blue whale populations. Whale poaching is also a major contributor to the decline in ocean health.

The blue whale was largely immune to human whalers for centuries, thanks to its size, strength, and speed. It was only the introduction of the harpoon gun in the 19th century that allowed the harvesting of this giant creature.

Over 300,000 were killed before the 1966 ban, with the Soviet Union continuing illegal whaling into the 1970s and Japan continuing to hunt whales for meat under cover of science.

The main reason people poach whales is for their meat. Their meat is considered a delicacy in some parts of the world, and it can sell for a high price. Some people also poach whales for their blubber, which can be used to make oil.

Ship Accidents

Blue whales are no longer commercially hunted, but the road to recovery is long and difficult. These pecies are often struck accidentally by ships, which can easily injure or kill them, and may be endangered further by alterations in krill populations due to global warming.

Water Pollution

One of the main threats to Blue Whales is water pollution. This pollution can come from a number of different sources, including oil spills, agricultural runoff, and chemical pollutants. These pollutants can seriously harm Blue Whales, and in some cases, even kill them.

Noise Pollution

Ships gives Whales with noise pollution, which makes it difficult for Whales to communicate with each other underwater. Whales often get in collisions with ships in the California Current, which is one of the whales’ favorite feeding grounds.

See Related: Dusky Shark

Conservation efforts

Conservation efforts for the whale began in 1966 with the passage of the whaling ban on this species. Attempts to conserve, restore, and study these gigantic marine mammals continue to the current day. Both nonprofit organizations and various governments of the world are involved in efforts to foster the recovery of these huge but vulnerable creatures.

There is joint cooperation between countries to help conserve whales. The United States Fishery Management Plan is one of the most successful practices that is used for whale conservation, with 50% of Blue Whales located in the USA’s Exclusive Economic Zone (EEZ). Continued research into Blue Whales is also essential for Blue Whale conservation.

Whale Sanctuaries

There are many conservation efforts being made to save whales. Some of these include creating whale sanctuaries, acoustic deterrents, and reducing ship collisions.

Whale sanctuaries are areas where Blue Whales can live without being disturbed. Acoustic deterrents are devices that emit sounds that scare whales away from certain areas. Ship collisions are the leading cause of death for Blue Whales.

Marine Mammal Science and Research Program

The Blue Whale Research Program is the most comprehensive study on Blue whales. The goal of this program is to get an accurate count the species populations, assess their distribution and migratory habits, and learn how they communicate with each other.

This research program is important because it helps scientists understand whales better in order to protect them.

Educational Programs

Educational programs for whale conservation. You can start such activities by researching about whales and the issues of Blue whales in the ocean.

Whale Watching Trips

Whale watching trips are a great way to help whale conservation. By going on whale watching trips, people are able to see these beautiful animals up close and learn more about them.

This helps to create awareness about the need to protect them and their habitat. Whale watching trips also provide much-needed revenue for whale conservation efforts.

Pollution control

One of the main reasons why whales are endangered is because they are affected by pollution. Pollution is when harmful substances enter the environment and it can cause a lot of damage. One of the biggest threats to Blue Whales is ocean pollution.

There are many things that people can do to help reduce pollution and protect whales. Some of these things include reducing the amount of plastic that is produced, driving less and using public transportation more, recycling, and composting.

Online Campaigns

  • Whale online campaigns are a great way to raise awareness about the endangered Blue Whale. Some of the things that you can do to help Blue Whales include:
  • Signing petitions to get these species protected
  • Sharing information about the wahles on social media using hashtag #SavetheBWs
  • Donating money to organizations that are working to protect whales
  • Volunteering your time to help with whale conservation efforts


The Hebridean Whale & Dolphin Trust

The Hebridean Whale & Dolphin Trust monitors marine mammals and their habitats off the coast of Scotland. They work to protect various species through outreach and educational programs.

The Hebridean Whale & Dolphin Trust is a non-profit organization that was established in 2008. Its main aim is to study, conserve and protect whales and dolphins. This is done through the use of its two research vessels, The Sea Watch Foundation, Blue Ventures, and various networks in promoting sustainable fishing practices.

World Wildlife Fund

The World Wildlife Fund is a global organization that focuses on the conservation of animals and their habitats.

One of the main focuses of WWF is the conservation of blue whales. The fund is working to conserve whales by developing partnerships with governments, businesses, and other organizations.

One way that the fund is conserving Blue Whale is by teaching whalers how to use new technologies.

Whaling used to be a way for people’s survival, but today it is not needed as much and the World Wildlife Fund wants whalers to learn about more sustainable fishing practices instead.

Final Thoughts

Blue whales, the largest animal to have ever lived on Earth and a member of the dolphin family, are endangered. Whales are large marine animals that can be found in all of the world’s oceans. They are a type of cetacean and there are many different species of whale. Some whales, such as Blue Whales, are endangered.

The whale populations declined by 98% in just 50 years due to whaling and other accidental causes. Scientists believe that they may be able to recover if we take action now.

The Hebridean Whale & Dolphin Trust is one organization working hard for whale conservation through research, education programs, and partnerships with governments and businesses around the world. With your help as well as theirs though it’s possible that Blue Whales can once again thrive in our oceans!



What is Blue Whale?

The blue whale is the largest animal that has ever lived on Earth.

These whales can weigh up to 190 tons and reach lengths of up to 70 feet, making them significantly larger than your automobile! They may be found in all seas on Earth. It is known that these whales consume plankton and tiny fish, yet they drink a lot of water every day to avoid desiccating.

They are a vulnerable creature, with worldwide populations have plummeted by 98 percent owing to whaling, making them one of the world’s most endangered animals.

Why are Blue whales endangered?

Blue whales are endangered because they’re hunted by humans for their oil, meat, and teeth. These species are the largest animal to have ever lived on Earth.

They can be found in all oceans of the world. Whales were a sustainable healthy species for hundreds of years until humans hunted them heavily to extinction today.

Is Blue Whale friendly to humans?

Blue whales are not classified as aggressive species. They have been observed to follow fishing boats around. The whales can weigh as much as 200 tons and grow as long as 100 feet! They also emit a wide range of sounds from low-frequency moans to high-pitched whistles, where the frequency is modulated by their breathing patterns.

What does the Hebridean Whale & Dolphin Trust do for Blue whale conservation?

The Hebridean Whale and Dolphin Trust is a charity organization with the primary aim of whale conservation. It seems that they are on a course to be extinct in less than thirty years.

The Hebridean Whale and Dolphin Trust are one of the first organizations to focus specifically on whale conservation, as opposed to other marine life.

So what does the trust do for Blue whale conservation? The organization has been fortunate enough to work with various partners. From those who share their awareness at schools, those who make donations on behalf of dead whales, those who monitor lagoons for whales, and more projects such as data abatement research programs.

How can I help Blue whale conservation efforts?

Your attitude and opinion matter a lot.

As whales face the threat of extinction due to modern technology, you can help whale conservation efforts by being more conscious about the environmental impact your technology usage has on Whales.

Take this pledge to Reduce Your Demand For Blue Whale Products and work towards making your voice heard in support of whale conservation efforts. Far too often we don’t think about our global impact when using products from companies that don’t respect whales or the environment.

There are many ways to help whales are directly affected by the noise in the ocean. Blue-whale song travels thousands of miles underwater, and can even be heard through solid rock!
If our oceans become noisier with boat traffic, sonar, and another tech usage– Blue Whales won’t be able to communicate as effectively with each other.

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