Hello readers! Today, with the second article of my series, I want to
answer to this question :
Have whales always been that big ?
The blue
whale is the biggest animal on Earth , you can swim into their artery and they
have such a big network of blood vessels that if you laid them out in a line
you could stretch them from the Sun to Pluto and back for two and a half times
,but ... unlike you
would think whales haven’t always been that big , if we rewind the clock around
fifty million years you wouldn’t find
any whale , you have to go ashore to meet the very first whale: the pakicetus.
It wasn’t taller than a dog, had legs
with hooves and a long and thick tail .
