A very informational video with some waxy facts.
If you want to learn more here is some other web sites to help you.
National Geographic https://www.nationalgeographic.com/animals/mammals/b/blue-whale/
and
Animal Diversity Web
This is a list of how endangered animals can be the Blue Whale is EN if you want to learn more about how you can help click HERE.
LC
LEAST CONCERN
At relatively low risk of extinction
NT
NEAR THREATENED
Likely to become vulnerable in the near future
VU
VULNERABLE
At high risk of extinction in the wild
EN
ENDANGERED
At very high risk of extinction in the wild
CR
CRITICALLY ENDANGERED
At extremely high risk of extinction in the wil
EW
EXTINCT IN THE WILD
Survives only in captivity
EX
EXTINCT
No surviving individuals in the wild or in captivity