Animals

A silky shark named Genie swam 17,000 miles, a record-breaking migration

A silky shark named Genie traveled from the Galapagos Islands out to the open ocean and back – over 17,000 miles – over the course of a year and a half. That's an average of 31 miles per day, making Genie's journey the longest recorded migration for a silky shark.

Marine scientist Pelayo Salinas de León and his team named Genie in honor of the late marine biologist Eugenie Clark – also known as "The Shark Lady." She devoted her life to the study of sharks and to improving their reputation.

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Thousands of fireflies emerge in South Carolina to put on a mind-blowing light show

For a few weeks in late spring, thousands of fireflies emerge at the Congaree National Park in South Carolina to blink in synchrony. This natural phenomenon draws thousands of visitors whose appreciation, while welcome, has led the park to institute protections for the fireflies, so their populations can live on. Digital (edited by Carme Wroth) runs Sunday 5/26. Broadcast ATC .