Eukaryotes, organisms with nuclei in their cells, are the ancestors of modern multicellular life. They emerged no later than 1.8 billion years ago and slowly diversified over the ensuing "boring ...

The latest addition is the Marine Organismal Body Size (MOBS) database, an open-access resource that—as its name implies—has collected body size data for more than 85,000 marine animal species and ...

This chart of sea-dwelling giants will make you feel tiny. ... Some species can have remarkably different sizes throughout their life cycle, and some of that variation is based on environment.

Scientists have returned from an unprecedented expedition to catalogue the tiny drifters of the deep - miniature flying snails, swimming worms and shrimp-like creatures that paddle themselves with ...