Two groups of whales evolved massive heads for different reasons

Bowhead and right whales are among the biggest animals alive today, but a new look at how they evolved suggests that the two groups ballooned in size independently of each other, and probably for different reasons

Two groups of whales evolved massive heads for different reasons
Bowhead and right whales are among the biggest animals alive today, but a new look at how they evolved suggests that the two groups ballooned in size independently of each other, and probably for different reasons