But examine that water under a microscope ... the blue whale. Blue whales eat by filtering seawater through their comb-like baleen, pushing out water while keeping the plankton in their mouth.

Some Texas beachgoers might be heading to the Bolivar Peninsula to catch a glimpse of the waves glowing blue at night due to a recent bloom of bioluminescent plankton. But when they get there, they ...

A microscope image of a shelled plankton. According to research from The University of Texas at Austin, plankton populations like this flourished in the tropics during past global cooling and may ...

Image caption, This is one type of plankton viewed through a microscope. In fact, many scientists believe that these tiny plants and animals are amongst the most important in our seas. They may ...