alt Hacker News"Analysis of the data suggests that a blue whale’s heart is already working at its limit, which may explain why blue whales have never evolved to be bigger."
Incredible to think of the volume of all the blood it's pumping around.
Replies
BurningFrog • yesterday at 11:17 PM
At the risk of being annoying, I'm pretty sure they have evolved to be bigger quite a lot, until they reached their maximum viable size.
I don't understand how that would limit evolution. Bigger bodies can evolve together with bigger hearts, as already witnessed with the very whales being researched.