Blue whales
Blue Whale
Size: Can grow up to 30 meters long (about the length of 3 buses!)
Weight: Around 150–200 tons (as heavy as 30 elephants!)
Where do they live?
Blue whales live in all the world’s oceans, from cold polar waters to warmer seas.
What do they eat?
They eat tiny shrimp-like animals called krill.Even though they are huge, they only eat small creatures!
How do they breathe?
They have lungs (not gills), so they come up to the surface to breathe through a blowhole.
How do they communicate?
Blue whales make very loud, deep sounds.Their calls can travel hundreds of kilometers underwater!
How do they reproduce?
They reproduce sexually
The mother gives birth to a baby called a calf
A calf can drink hundreds of liters of milk every day and grows very fast!
What is the sitephic name for blue wales?
The scientific name of Blue wale is:
Balaenoptera
So, it basically means a strong, large whale
how do blue wales sleep?
How do Blue whale sleep?
Blue whales don’t sleep like we do. They can’t go into deep sleep because they need to breathe air.
Their special way of sleeping:
They rest half of their brain at a time
One half sleeps while the other half stays awake
This helps them remember to come up for air
What do they look like when sleep?
They move very slowly or just float in the water
Sometimes they stay near the surface
They may rest alone or quietly in the ocean
Why can’t they fully sleep?
Because they don’t have automatic breathing like humans.They must consciously think to breathe, so they can’t fully “switch off.”
how do blue wales reproduce?
How do Blue whale reproduce?
Blue whales reproduce sexually, just like most mammals.
gestation
The mother carries the baby for about 10–12 months
Birth:
The baby is called a calf
It is born alive in the water (not from eggs!)
A newborn calf is already about 7 meters long
Baby care:
The calf drinks mother’s milk
It grows very fast—about 80–90 kg every day!
When does it became an adult
When does a Blue whale become an adult?
Blue whales don’t become adults right away—it takes several years.
Growing up:
A baby (calf) drinks milk for about 6–7 months
Then it starts eating food like krill and keeps growing
Becoming an adult:
Blue whales become fully grown adults at about 8–10 years old