Blue Whale the biggest animal
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 lenght and 180 tons but normally is less then 30 mt and around 130/140 tons
Where to find:
is distributed all around the oceans divided in more subspecies. is difficult to know easily the dimensions the populations because are fragmented.
Blue whale is the biggest animal never existed in the earth, some studies have evidenced that even the saurian was not big like her. The communications are by songs, is very fascinating to listen this songs even if we can’t list all the sounds, because someone are below the limit of human fill.
Her mastodontic dimensions make her to eat up 4 tons of krill per day. When is breathing emit a spout, this spout can 12 mt high. 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 need between 400 to 600 liters of milk per day. But is not enough, blue whale is the loudest animal on the earth, scientist have estimated that her sound level measured at one meter of distance is between 155 to 188 decibel.
Blue whale don’t have natural enemy, just the killer whale can be danger but the attacks are not a custom. But as usually there is the human interaction, and the noise by the seals is creating 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 was been forbidden in 1960 everywhere but there are evidence that was killed up to 1970. So now the population is below the 1% of the original dimension. The specie is considered Endangered and the actually 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.