I understand, generally, *how* they got that big but not *why*. What was the evolutionary advantage to their massive size? Is there one? Or are they just big for the sake of being big?
In: Biology
There’s a big advantage: big animals are hard to kill. There’s a very short list of animals that can hunt a blue whale. In fact that list might just be one creature (orca).
Not being able to be hunted down is a really good advantage 😉
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