How Long is a Blue Whale? Size, Facts, Lifespan, Diet & Feeding

The blue whale is Earth’s largest and most magnificent creature. It is a true genius of the deep oceans. Just how long is a blue whale, you may imagine? Well, the answer is quite remarkable – a blue whale can reach 82 to 105 feet. Yes, you read that right, 82 to 105 feet. So, let’s dive deeper into the remarkable sizes of the blue whales and explore the unbelievable world of these oceanic giants. The blue whale’s huge size has fascinated scientists and fans alike for generations.

How long is a blue whale? Size Explained

Would like to highlight below findings about how long is a blue whale:

  • Blue whales can balance as much as 200 tons. Which is about the same as 33 elephants.
  • Despite their massive size, they are filter feeders, consuming tiny krill and small fish.
  • A blue whale’s heart alone can be the size of a small car and is considered around 1,300 pounds (590 kilograms).
  • Their tongue can be so massive that over 50 people could stand on it.

Blue whales are truly extraordinary creatures that continue to captivate our imaginations with their surprising size and unique characteristics.

adult blue whale
adult blue whale

The longest blue whale ever

Here are the details analysis report about the longest blue whale:

  • Heart Rate: At the surface level, a blue whale’s heart can pulse as slowly as once per few seconds. But it can speed up to more than 20 beats per minute during deep dives. The change in heart rate helps in moving from shallow to deep dives.
  • Tongue Function: While a blue whale’s tongue is large. It is not employed for eating. When they filter feed, it is used to force water out of their mouths. The water is then pushed into the wool plates, trapping the tiny prey while letting the water escape.
  • Habitat: Blue whales can be found in oceans all over the world. They prefer cooler waters for searching and move to warmer waters to reproduce.
  • Skin Color: Blue whales have spotted grayish-blue skin that can look lighter or darker depending on lighting and viewing angle. They may also have white or yellowish areas on their skin caused by a form of skin lice.
  • Migratory Behavior: Some blue whale populations are well known for their deep travels. For example, Eastern North Pacific blue whales can travel from feeding grounds off the coast of California to their breeding grounds near Central America.
  • Feeding Effectively: Blue whales are excellent feeders. During their feeding season. They can consume up to 4 tons of krill in a single day.
  • Endangered Status: Blue whales are still considered endangered. But gains in their conservation status in some locations. Blue whales are still considered endangered due to various threats, including ship strikes, entanglement in fishing gear, and noise pollution in their habitats.
longest blue whale
longest blue whale

Blue whales facts

Here are some different blue whale facts provided below:

Largest Animal: Blue whales are the largest animals on Earth, even larger than the largest dinosaurs.

Size comparison: They can grow to be as long as a basketball court and as heavy as 30 elephants together.

Tiny Diet: Despite their size, blue whales eat some of the smallest animals in the water, including krill and small fish.

Mouthful of Water: When they feed, they gulp down big mouthfuls of water and then use baleen plates to filter out food.

Heart Size: Their hearts can be as large as a small car and as heavy as a small elephant.

Long Migration: Blue whales can travel thousands of kilometers during their regular migrations.

Deep Divers: They are capable of jumping to the lowest point of over 1,000 feet in the ocean.

Endangered Species: Blue whales are an endangered species in mark for to historical whaling. They are being made to safeguard them.

Vocal Communicators: They communicate by making loud or low-frequency sounds. That may be heard over vast distances.

Graceful swimmer: They are graceful swimmers. Despite their size, and can reach speeds of up to 20 miles per hour in brief bursts.

blue whales facts
blue whales facts

The lifespan of blue whales

Here are the key points about the lifespan of blue whales:

Lifespan: Blue whales typically live for around 70 to 90 years.

Factors: Their lifespan can differ based on environmental conditions, food availability, and human threats.

Diet: Blue whales mainly eat krill, tiny shrimp-like creatures found in the ocean.

Size: They are the largest animals on Earth, with lengths of up to 100 feet or more and weights of up to 200 tons.

Migrations: Blue whales undertake long movements between feeding and upbringing areas, covering thousands of miles.

Conservation: They are endangered due to historical hunting. Their management efforts are in place to protect them.

Population: There are around 10,000 to 25,000 blue whales globally.

Cultural Significance: Blue whales are culturally significant and symbols of miracles and wonder in the natural world.

Research: Scientists study blue whales to understand their behavior, and migration patterns, and to support protection efforts.

blue whale lifespan
blue whale lifespan

Related Article, Checkout: Bowhead Whales Lifespan

Blue Whale diet and feeding

The blue whale’s diet consists almost exclusively of krill. Blue whales capture krill through lunge feeding. According to Wikipedia, blue whale swim towards them at high speeds as they open their mouths up to 80° They may engulf 220 metric tons (220 long tons; 240 short tons) of water at one time. They squeeze the water out finish their baleen plates with pressure from the throat pouch and tongue and swallow the remaining krill. Blue whales have been recorded making 180° rolls during lunge-feeding, possibly allowing them to search the prey field and find the densest patches.

Related Article, Checkout: How Does Whales Sleep?

blue whale eating process
blue whale eating process

Blue whales heart

  • Enormous Size: A blue whale’s heart is one of the largest hearts. Whales-like hearts are not found in any animal species.
  • Weight: It can weigh as much as 1,300 pounds (590 kilograms).
  • Size Comparison: It can be crudely the size of a small car, providing a view of its huge scale.
  • Blood Circulation: The large heart is necessary to pump the vast volume of blood required to support the blue whale’s massive body.
  • Physiological Significance: The heart plays a critical role in ensuring that oxygen. Its nutrients are transported ably throughout the whale’s massive body.
  • Beating Rate: The heart rate of a blue whale can vary. It is generally slower when the whale is at rest and faster when it is active. It might beat around 4 to 8 times per minute when the whale is resting. The rate can increase significantly during more energetic activities.
  • Anatomy: The heart is composed of four chambers. Like the hearts of other mammals. It functions to pump oxygenated blood from the lungs to the rest of the body.
  • Remarkable Adaptation: The immense heart is a remarkable adaptation to support the blue whale’s massive size and energy needs.

The size and power of a blue whale’s heart are amazing. They are just one of the many unbelievable features of this remarkable species.


Blue whales are known as the largest animals to have ever beautified our planet. They can reach amazing lengths of up to 100 feet or more. In average terms, an adult blue whale typically measures between 70 to 90 feet. The horror of their size is a piece of evidence of the marvels of the natural world. So the final answer to the query ‘How long is a blue whale?’ is that they are huge, with a size and majesty that sets them apart in the animal kingdom.

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