Ocean animals have bulked up since ancient eras

Size of marine creatures averages 150 times bigger than 540 million years ago

Blue Whale

LARGE AND IN CHARGE  Marine animals today have become 150 times larger on average than the biggest ocean dwellers in ancient times. The blue whale is the biggest animal to have ever lived.

NOAA Photo Library/Wikimedia Commons

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Animals

From the Nature Index

Paid Content