Re: Why are whales so big? Hi jeeprasr and thanks for your
comments. You've answered the how-so-big, but I was inteerested
in the "why now?", why not ever in the past? I guess the answer
is tied up with the need for so much food requiring such long
journey's a high metabolic rate and the need to be a warm
blooded mammal to be so active in frigid waters. A question of
which came first, the requirement to enter frigid waters to
support the food requirement or the being warm blooded and large
enough (as a result of enough food) to be able to enter frigid
waters. Then again, seals can do it too - while feeding on
krill, and they are much smaller.