When one thinks of elegance something like a propulsive rocket landing or Simone Biles pirouetting through the air probably comes to mind. The sea-dwelling gossamer worm may deserve a mental slot in ...

Identify aquarium worms and learn maintenance tips for a healthy tank. Reviewed by Nick Saint-Erne If you have noticed tiny white worms in your fish tank, you likely have one of two issues to address.

The average scale worm trudges along the seafloor like a tiny armored tank. The worm’s overlapping scales shield its backside from predators, while bristled appendages help it scuttle through the mud.

This story is from The Pulse, a weekly health and science podcast. As a kid growing up in southern California, Don Arndt always loved the ocean. “I’ve always been fascinated with fish,” he said. “My ...