Blue Whale the biggest animal of the world
Scientific Name: Balaenoptera musculus
English name: Blue Whale
Link to Red List page: Blue whale red list
Open oceans and along the coasts but not so close
The blue whale can be 33 Mt length and 180 tons but normally is less than 30 mt and around 130/140 tons
Where to find:
is distributed all over the oceans divided into more subspecies. Is difficult to know easily the dimensions the populations because are fragmented.
The blue whale is the biggest animal ever on the earth. Some studies show that even the saurian was not big like her. The communications are by songs, and it is fascinating to listen to these songs. Even if we can’t list all the sounds because someone is below the limit of human fill.
Her mastodontic dimensions make her eat up 4 tons of krill per day. When is breathing emit a spout, this spout can 12 mt high. The lifespan of this animal is around 80 years.
Impressive numbers even for the calves. They born after almost one year of gestation and they are 7 Mt length with a weight of 2.5 tons. He needs between 400 to 600 liters of milk per day. But is not enough, the blue whale is the loudest animal on the earth. The scientist has estimated that her sound level measured at one meter of distance is between 155 to 188 decibel.
Blue whale doesn’t have a natural enemy, just the killer whale can be a danger. But the attacks are not a custom. As usual, there is the human interaction. And the noise by the seals is creating a problem in the whale communications. The biggest issue has been the ruthless hunting, up to 1970 the blue whale killed was 380.000.
The hunting has been forbidden in 1960 everywhere but there is evidence that was under hunters attention up to 1970. So now the population is below the 1% of the original dimension. The species is considered Endangered and the actual population is between 5000 and 12.000 specimens. The good news is that the number is increasing but we are very far from the safe level.