How whales became biggest animals on Earth - Largest animal on Earth

1. How whales became biggest animals on Earth - Largest animal on Earth whales-- the largest animals on the planet evolved to gigantic sizes only nearly 2--3 million years ago as a result of changes in the distribution of their food in the oceans, according to a new study' a data also showed that the large whales that exist today were not present for most of the whaling history, not only did whale with bodies longer than 10 metres begin to evolve around this time, but smaller species of whales also began to disappear'

researchers said that evolutionary shift took place at the beginning of the ice ages, corresponds to the climate changes that would have reshaped whales food supply in the world's oceans at the time of this transition, baleen whales which filter small prey, like out, of sea water, 

• were well equipped to take advantage of these dense patches of food as rich sources of prey became concentrated in particular locations and times of the year, it boosted the whale's food supply and thereby--- lead to a gradual yet steady growth in their body size over the decades.