lower1. 1  to cause to descend; let or put down: to lower a flag. 2  to make lower in height or level: to lower the water in a canal. 3  to reduce in amount, price, degree, force, etc. 4  to make less loud: Please lower your voice.
Most people believe that the largest animals to ever exist on Earth were the dinosaurs. However, one of the largest land dinosaurs, the sauropod Argentinosaurus, weighed only about 180,000 pounds (81,647 kg). That's little more than half the size of an adult blue whale. It makes a lot of sense that the world's largest animal would be a sea creature. Land animals have to support their own weight, whereas sea creatures get some help from the water. It is believed that at one time there were more than 200,000 blue whales.
Balaenoptera. The blue whale (Balaenoptera musculus) is the largest animal to have ever lived, being almost as big as a Boeing 737 and even larger than the biggest dinosaurs. The largest recorded length for a blue whale is 33.5 metres, although most individuals vary between 24 and 27 metres. The blue whale is the largest animal to have ever lived. 2  The heart of the blue whale is the size of a small car and can weigh up to 900 kg. 3  During the summer months, the blue whale can eat more than 4 tonnes of krill every day. 4  Individual blue whales can be identified by the mottled pattern on their skin.