The male Asian subterranean termite (brown abdomen) and the female Formosan subterranean termite (orange abdomen) are surrounded by their hybrid offspring (eggs, larvae, workers, soldiers) in an eight-month-old colony. Thomas Chouvenc/University of Florida hide caption

itoggle caption Thomas Chouvenc/University of Florida

A recently rescued sea turtle recovering on the banks of the San Gabriel River. Sanden Totten/Southern California Public Radio/KPCC hide caption

itoggle caption Sanden Totten/Southern California Public Radio/KPCC

John Hargrove, a trainer who spent 14 years working with orcas, mostly at SeaWorld, eventually became disillusioned with the company's treatment of its killer whales. Courtesy of Palgrave Macmillan Trade hide caption

itoggle caption Courtesy of Palgrave Macmillan Trade

So far this month, more than 330 California sea lions have been admitted to the Marine Mammal Care Center at Fort MacArthur in San Pedro, Calif. Nathan Rott/NPR hide caption

itoggle caption Nathan Rott/NPR

University of Arizona entomologist Justin Schmidt was stung well over 1,000 times while creating the Schmidt Sting Pain Index. Sam Droege/USGS/Flickr hide caption

itoggle caption Sam Droege/USGS/Flickr

Hundreds of adult wood storks gather on the tops of trees at the Harris Neck National Wildlife Refuge. Stephen B. Morton/AP hide caption

itoggle caption Stephen B. Morton/AP

A baby orangutan wearing a diaper swings through the trees at the Sumatran Orangutan Conservation Program outside Medan, capital of Indonesia's North Sumatra province. The program takes mostly orphaned orangutans, nurses them back to health and releases them back into the wild. Anthony Kuhn/NPR hide caption

itoggle caption Anthony Kuhn/NPR

Reconstruction of the giant filter feeder, scooping up a plankton cloud. Aegirocassis benmoulae was one of the biggest arthropods that ever lived. Family members include today's insects, spiders and lobsters. Marianne Collins/ArtofFact hide caption

itoggle caption Marianne Collins/ArtofFact

One possible result in the Mighty Mini Mammals division of 2015's Mammal March Madness tournament. If the species that's seeded highest always wins its bracket, the fennec fox will beat out the rest of the division and advance to the final four. Adam Cole/NPR hide caption

itoggle caption Adam Cole/NPR